diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 862d2b92fa..262a1d6c0b 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -437,7 +437,7 @@ void aarch64_add_sve_properties(Object *obj)
 
     for (vq = 1; vq <= ARM_MAX_VQ; ++vq) {
         char name[8];
-        sprintf(name, "sve%d", vq * 128);
+        snprintf(name, sizeof(name), "sve%d", vq * 128);
         object_property_add(obj, name, "bool", cpu_arm_get_vq,
                             cpu_arm_set_vq, NULL, &cpu->sve_vq);
     }
@@ -462,7 +462,7 @@ void aarch64_add_sme_properties(Object *obj)
 
     for (vq = 1; vq <= ARM_MAX_VQ; vq <<= 1) {
         char name[8];
-        sprintf(name, "sme%d", vq * 128);
+        snprintf(name, sizeof(name), "sme%d", vq * 128);
         object_property_add(obj, name, "bool", cpu_arm_get_vq,
                             cpu_arm_set_vq, NULL, &cpu->sme_vq);
     }