diff --git a/src/svf/svf.c b/src/svf/svf.c
index 1d686ba61..223af7e18 100644
--- a/src/svf/svf.c
+++ b/src/svf/svf.c
@@ -741,6 +741,9 @@ parse_char:
 		pos++;
 	}
 
+	if (num == 0)
+		return ERROR_FAIL;
+
 	*num_of_argu = num;
 
 	return ERROR_OK;
@@ -1313,7 +1316,7 @@ XXR_common:
 			 * SEC]] [ENDSTATE end_state] */
 			/* RUNTEST [run_state] min_time SEC [MAXIMUM max_time SEC] [ENDSTATE
 			 * end_state] */
-			if ((num_of_argu < 3) && (num_of_argu > 11)) {
+			if ((num_of_argu < 3) || (num_of_argu > 11)) {
 				LOG_ERROR("invalid parameter of %s", argus[0]);
 				return ERROR_FAIL;
 			}