diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
index a36d3fada3..ee7c908710 100644
--- a/target/riscv/cpu_cfg.h
+++ b/target/riscv/cpu_cfg.h
@@ -129,6 +129,7 @@ struct RISCVCPUConfig {
     bool ext_ssaia;
     bool ext_sscofpmf;
     bool ext_smepmp;
+    bool ext_smrnmi;
     bool ext_ssnpm;
     bool ext_smnpm;
     bool ext_smmpm;