diff --git a/ext/pdo_pgsql/pgsql_statement.c b/ext/pdo_pgsql/pgsql_statement.c
index 1b2a59e4852a..1b2de962c5af 100644
--- a/ext/pdo_pgsql/pgsql_statement.c
+++ b/ext/pdo_pgsql/pgsql_statement.c
@@ -727,6 +727,7 @@ static int pgsql_stmt_get_attr(pdo_stmt_t *stmt, zend_long attr, zval *val)
 #endif
 
 		default:
+			(void)S;
 			return 0;
 	}
 }