diff --git a/ext/pdo/pdo_dbh.c b/ext/pdo/pdo_dbh.c
index 9642b8324c7..a1c586d745d 100755
--- a/ext/pdo/pdo_dbh.c
+++ b/ext/pdo/pdo_dbh.c
@@ -999,7 +999,7 @@ static PHP_METHOD(PDO, errorInfo)
 	pdo_dbh_t *dbh = zend_object_store_get_object(getThis() TSRMLS_CC);
 
 	if (ZEND_NUM_ARGS()) {
-		RETURN_FALSE;
+		WRONG_PARAM_COUNT;
 	}
 	PDO_CONSTRUCT_CHECK;
 
@@ -1140,6 +1140,10 @@ static PHP_METHOD(PDO, getAvailableDrivers)
 {
 	HashPosition pos;
 	pdo_driver_t **pdriver;
+
+	if (ZEND_NUM_ARGS()) {
+		WRONG_PARAM_COUNT;
+	}
 	
 	array_init(return_value);