diff --git a/gcc/common/config/riscv/riscv-common.cc b/gcc/common/config/riscv/riscv-common.cc
index ded85b4c578..6c210412515 100644
--- a/gcc/common/config/riscv/riscv-common.cc
+++ b/gcc/common/config/riscv/riscv-common.cc
@@ -106,7 +106,7 @@ static const riscv_implied_info_t riscv_implied_info[] =
 
   {"zvkn", "zvkned"},
   {"zvkn", "zvknhb"},
-  {"zvkn", "zvbb"},
+  {"zvkn", "zvkb"},
   {"zvkn", "zvkt"},
   {"zvknc", "zvkn"},
   {"zvknc", "zvbc"},
@@ -114,7 +114,7 @@ static const riscv_implied_info_t riscv_implied_info[] =
   {"zvkng", "zvkg"},
   {"zvks", "zvksed"},
   {"zvks", "zvksh"},
-  {"zvks", "zvbb"},
+  {"zvks", "zvkb"},
   {"zvks", "zvkt"},
   {"zvksc", "zvks"},
   {"zvksc", "zvbc"},
@@ -253,6 +253,7 @@ static const struct riscv_ext_version riscv_ext_version_table[] =
 
   {"zvbb", ISA_SPEC_CLASS_NONE, 1, 0},
   {"zvbc", ISA_SPEC_CLASS_NONE, 1, 0},
+  {"zvkb", ISA_SPEC_CLASS_NONE, 1, 0},
   {"zvkg", ISA_SPEC_CLASS_NONE, 1, 0},
   {"zvkned", ISA_SPEC_CLASS_NONE, 1, 0},
   {"zvknha", ISA_SPEC_CLASS_NONE, 1, 0},
@@ -1624,6 +1625,7 @@ static const riscv_ext_flag_table_t riscv_ext_flag_table[] =
 
   {"zvbb",     &gcc_options::x_riscv_zvb_subext, MASK_ZVBB},
   {"zvbc",     &gcc_options::x_riscv_zvb_subext, MASK_ZVBC},
+  {"zvkb",     &gcc_options::x_riscv_zvb_subext, MASK_ZVKB},
   {"zvkg",     &gcc_options::x_riscv_zvk_subext, MASK_ZVKG},
   {"zvkned",   &gcc_options::x_riscv_zvk_subext, MASK_ZVKNED},
   {"zvknha",   &gcc_options::x_riscv_zvk_subext, MASK_ZVKNHA},
diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt
index 0c6517bdc8b..78186fff6c5 100644
--- a/gcc/config/riscv/riscv.opt
+++ b/gcc/config/riscv/riscv.opt
@@ -319,6 +319,8 @@ Mask(ZVBB) Var(riscv_zvb_subext)
 
 Mask(ZVBC) Var(riscv_zvb_subext)
 
+Mask(ZVKB) Var(riscv_zvb_subext)
+
 TargetVariable
 int riscv_zvk_subext
 
diff --git a/gcc/testsuite/gcc.target/riscv/zvkn-1.c b/gcc/testsuite/gcc.target/riscv/zvkn-1.c
index 23b255b4779..069a8f66c92 100644
--- a/gcc/testsuite/gcc.target/riscv/zvkn-1.c
+++ b/gcc/testsuite/gcc.target/riscv/zvkn-1.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
-/* { dg-options "-march=rv64gc_zvkned_zvknhb_zvbb_zvkt" { target { rv64 } } } */
-/* { dg-options "-march=rv32gc_zvkned_zvknhb_zvbb_zvkt" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc_zvkned_zvknhb_zvkb_zvkt" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_zvkned_zvknhb_zvkb_zvkt" { target { rv32 } } } */
 
 #ifndef __riscv_zvkn
 #error "Feature macro for `Zvkn' not defined"
@@ -14,8 +14,8 @@
 #error "Feature macro for `Zvknhb' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvkn.c b/gcc/testsuite/gcc.target/riscv/zvkn.c
index 0047ebdede6..bcecbcc7e77 100644
--- a/gcc/testsuite/gcc.target/riscv/zvkn.c
+++ b/gcc/testsuite/gcc.target/riscv/zvkn.c
@@ -14,8 +14,8 @@
 #error "Feature macro for `Zvknhb' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvknc-1.c b/gcc/testsuite/gcc.target/riscv/zvknc-1.c
index d8a84c02118..64cae2bfe83 100644
--- a/gcc/testsuite/gcc.target/riscv/zvknc-1.c
+++ b/gcc/testsuite/gcc.target/riscv/zvknc-1.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
-/* { dg-options "-march=rv64gc_zvkned_zvknhb_zvbb_zvkt_zvbc" { target { rv64 } } } */
-/* { dg-options "-march=rv32gc_zvkned_zvknhb_zvbb_zvkt_zvbc" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc_zvkned_zvknhb_zvkb_zvkt_zvbc" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_zvkned_zvknhb_zvkb_zvkt_zvbc" { target { rv32 } } } */
 
 #ifndef __riscv_zvknc
 #error "Feature macro for `Zvknc' not defined"
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvknhb' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `ZvKb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvknc-2.c b/gcc/testsuite/gcc.target/riscv/zvknc-2.c
index 36cc6335d13..1f8b510bfd1 100644
--- a/gcc/testsuite/gcc.target/riscv/zvknc-2.c
+++ b/gcc/testsuite/gcc.target/riscv/zvknc-2.c
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvknhb' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvknc.c b/gcc/testsuite/gcc.target/riscv/zvknc.c
index a177f17fbd7..64dda5fdf1f 100644
--- a/gcc/testsuite/gcc.target/riscv/zvknc.c
+++ b/gcc/testsuite/gcc.target/riscv/zvknc.c
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvknhb' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvkng-1.c b/gcc/testsuite/gcc.target/riscv/zvkng-1.c
index d996b42af00..5419585f4de 100644
--- a/gcc/testsuite/gcc.target/riscv/zvkng-1.c
+++ b/gcc/testsuite/gcc.target/riscv/zvkng-1.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
-/* { dg-options "-march=rv64gc_zvkned_zvknhb_zvbb_zvkt_zvkg" { target { rv64 } } } */
-/* { dg-options "-march=rv32gc_zvkned_zvknhb_zvbb_zvkt_zvkg" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc_zvkned_zvknhb_zvkb_zvkt_zvkg" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_zvkned_zvknhb_zvkb_zvkt_zvkg" { target { rv32 } } } */
 
 #ifndef __riscv_zvkng
 #error "Feature macro for `Zvkng' not defined"
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvknhb' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvkng-2.c b/gcc/testsuite/gcc.target/riscv/zvkng-2.c
index 00199992d5c..6c7b239e831 100644
--- a/gcc/testsuite/gcc.target/riscv/zvkng-2.c
+++ b/gcc/testsuite/gcc.target/riscv/zvkng-2.c
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvknhb' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvkng.c b/gcc/testsuite/gcc.target/riscv/zvkng.c
index 4605faf3c6c..6c516a4ae13 100644
--- a/gcc/testsuite/gcc.target/riscv/zvkng.c
+++ b/gcc/testsuite/gcc.target/riscv/zvkng.c
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvknhb' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvks-1.c b/gcc/testsuite/gcc.target/riscv/zvks-1.c
index a576cdb0476..180b3f3c2a9 100644
--- a/gcc/testsuite/gcc.target/riscv/zvks-1.c
+++ b/gcc/testsuite/gcc.target/riscv/zvks-1.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
-/* { dg-options "-march=rv64gc_zvksed_zvksh_zvbb_zvkt" { target { rv64 } } } */
-/* { dg-options "-march=rv32gc_zvksed_zvksh_zvbb_zvkt" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc_zvksed_zvksh_zvkb_zvkt" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_zvksed_zvksh_zvkb_zvkt" { target { rv32 } } } */
 
 #ifndef __riscv_zvks
 #error "Feature macro for `Zvks' not defined"
@@ -14,8 +14,8 @@
 #error "Feature macro for `Zvksh' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvks.c b/gcc/testsuite/gcc.target/riscv/zvks.c
index d31b2610c20..2022d168ec1 100644
--- a/gcc/testsuite/gcc.target/riscv/zvks.c
+++ b/gcc/testsuite/gcc.target/riscv/zvks.c
@@ -14,8 +14,8 @@
 #error "Feature macro for `Zvksh' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvksc-1.c b/gcc/testsuite/gcc.target/riscv/zvksc-1.c
index 3b76e6cea70..0c81b4ee93b 100644
--- a/gcc/testsuite/gcc.target/riscv/zvksc-1.c
+++ b/gcc/testsuite/gcc.target/riscv/zvksc-1.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
-/* { dg-options "-march=rv64gc_zvksed_zvksh_zvbb_zvkt_zvbc" { target { rv64 } } } */
-/* { dg-options "-march=rv32gc_zvksed_zvksh_zvbb_zvkt_zvbc" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc_zvksed_zvksh_zvkb_zvkt_zvbc" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_zvksed_zvksh_zvkb_zvkt_zvbc" { target { rv32 } } } */
 
 #ifndef __riscv_zvksc
 #error "Feature macro for `Zvksc' not defined"
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvksh' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvksc-2.c b/gcc/testsuite/gcc.target/riscv/zvksc-2.c
index b95e34ec6e4..0cee3586390 100644
--- a/gcc/testsuite/gcc.target/riscv/zvksc-2.c
+++ b/gcc/testsuite/gcc.target/riscv/zvksc-2.c
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvksh' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvksc.c b/gcc/testsuite/gcc.target/riscv/zvksc.c
index 983f1aa89ec..6c33a86aa2e 100644
--- a/gcc/testsuite/gcc.target/riscv/zvksc.c
+++ b/gcc/testsuite/gcc.target/riscv/zvksc.c
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvksh' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvksg-1.c b/gcc/testsuite/gcc.target/riscv/zvksg-1.c
index e6b30552e4c..a81c8faf302 100644
--- a/gcc/testsuite/gcc.target/riscv/zvksg-1.c
+++ b/gcc/testsuite/gcc.target/riscv/zvksg-1.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
-/* { dg-options "-march=rv64gc_zvksed_zvksh_zvbb_zvkt_zvkg" { target { rv64 } } } */
-/* { dg-options "-march=rv32gc_zvksed_zvksh_zvbb_zvkt_zvkg" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc_zvksed_zvksh_zvkb_zvkt_zvkg" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_zvksed_zvksh_zvkb_zvkt_zvkg" { target { rv32 } } } */
 
 #ifndef __riscv_zvksg
 #error "Feature macro for `Zvksg' not defined"
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvksh' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `ZvKb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvksg-2.c b/gcc/testsuite/gcc.target/riscv/zvksg-2.c
index 2475e8bba1a..f6aa06bfbbe 100644
--- a/gcc/testsuite/gcc.target/riscv/zvksg-2.c
+++ b/gcc/testsuite/gcc.target/riscv/zvksg-2.c
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvksh' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
diff --git a/gcc/testsuite/gcc.target/riscv/zvksg.c b/gcc/testsuite/gcc.target/riscv/zvksg.c
index 4db9b5d6b9b..af2cd6e26ac 100644
--- a/gcc/testsuite/gcc.target/riscv/zvksg.c
+++ b/gcc/testsuite/gcc.target/riscv/zvksg.c
@@ -18,8 +18,8 @@
 #error "Feature macro for `Zvksh' not defined"
 #endif
 
-#ifndef __riscv_zvbb
-#error "Feature macro for `Zvbb' not defined"
+#ifndef __riscv_zvkb
+#error "Feature macro for `Zvkb' not defined"
 #endif
 
 #ifndef __riscv_zvkt
