diff --git a/ext/pgsql/pgsql.c b/ext/pgsql/pgsql.c
index c0d4a5117aefc..75b987d6b917e 100644
--- a/ext/pgsql/pgsql.c
+++ b/ext/pgsql/pgsql.c
@@ -6215,7 +6215,7 @@ PHP_FUNCTION(pg_put_copy_end)
 {
 	zval *pgsql_link;
 	pgsql_link_handle *link;
-	zend_string *error;
+	zend_string *error = NULL;
 	char *err = NULL;
 
 	ZEND_PARSE_PARAMETERS_START(1, 2)