diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index ba4667b33c..49d8958528 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -4947,6 +4947,7 @@ static void x86_cpu_class_check_missing_features(X86CPUClass *xcc,
         new->value = g_strdup("type");
         *next = new;
         next = &new->next;
+        error_free(err);
     }
 
     x86_cpu_filter_features(xc, false);