diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 671fc3d1c1..fe470f646d 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -1587,6 +1587,10 @@ const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = {
     /* Defaults for standard extensions */
     MULTI_EXT_CFG_BOOL("sscofpmf", ext_sscofpmf, false),
     MULTI_EXT_CFG_BOOL("smcntrpmf", ext_smcntrpmf, false),
+    MULTI_EXT_CFG_BOOL("smcsrind", ext_smcsrind, false),
+    MULTI_EXT_CFG_BOOL("smcdeleg", ext_smcdeleg, false),
+    MULTI_EXT_CFG_BOOL("sscsrind", ext_sscsrind, false),
+    MULTI_EXT_CFG_BOOL("ssccfg", ext_ssccfg, false),
     MULTI_EXT_CFG_BOOL("zifencei", ext_zifencei, true),
     MULTI_EXT_CFG_BOOL("zicfilp", ext_zicfilp, false),
     MULTI_EXT_CFG_BOOL("zicfiss", ext_zicfiss, false),