diff --git a/compiler/riscv32/cpuinfo.pas b/compiler/riscv32/cpuinfo.pas
index 6b6b3ccf58..2175d34456 100644
--- a/compiler/riscv32/cpuinfo.pas
+++ b/compiler/riscv32/cpuinfo.pas
@@ -215,6 +215,9 @@ Const
        CPURV_HAS_ZBB,
        CPURV_HAS_ZBC,
        CPURV_HAS_ZBS,
+       CPURV_HAS_ZBKB,
+       CPURV_HAS_ZBKC,
+       CPURV_HAS_ZBKX,
        CPURV_HAS_CSR_INSTRUCTIONS,   { extension Zicsr    }
        CPURV_HAS_FETCH_FENCE,        { extension Zifencei }
        CPURV_HAS_F,
diff --git a/compiler/riscv64/cpuinfo.pas b/compiler/riscv64/cpuinfo.pas
index bff84e38e6..8ea1af091c 100644
--- a/compiler/riscv64/cpuinfo.pas
+++ b/compiler/riscv64/cpuinfo.pas
@@ -134,6 +134,9 @@ Const
        CPURV_HAS_ZBB,
        CPURV_HAS_ZBC,
        CPURV_HAS_ZBS,
+       CPURV_HAS_ZBKB,
+       CPURV_HAS_ZBKC,
+       CPURV_HAS_ZBKX,
        CPURV_HAS_CSR_INSTRUCTIONS,   { extension Zicsr    }
        CPURV_HAS_FETCH_FENCE,        { extension Zifencei }
        CPURV_HAS_F,