diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index cab74faaca..a3e4e2477f 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -1009,12 +1009,13 @@ static Property riscv_cpu_extensions[] = {
     DEFINE_PROP_BOOL("zhinx", RISCVCPU, cfg.ext_zhinx, false),
     DEFINE_PROP_BOOL("zhinxmin", RISCVCPU, cfg.ext_zhinxmin, false),
 
+    DEFINE_PROP_BOOL("zmmul", RISCVCPU, cfg.ext_zmmul, false),
+
     /* Vendor-specific custom extensions */
     DEFINE_PROP_BOOL("xventanacondops", RISCVCPU, cfg.ext_XVentanaCondOps, false),
 
     /* These are experimental so mark with 'x-' */
     DEFINE_PROP_BOOL("x-j", RISCVCPU, cfg.ext_j, false),
-    DEFINE_PROP_BOOL("x-zmmul", RISCVCPU, cfg.ext_zmmul, false),
     /* ePMP 0.9.3 */
     DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false),
     DEFINE_PROP_BOOL("x-aia", RISCVCPU, cfg.aia, false),