diff --git a/ext/standard/exec.c b/ext/standard/exec.c
index a2630589510..2c38a1a34ae 100644
--- a/ext/standard/exec.c
+++ b/ext/standard/exec.c
@@ -341,6 +341,7 @@ char *php_escape_shell_cmd(char *str) {
 char *php_escape_shell_arg(char *str) {
 	int x, y, l;
 	char *cmd;
+	TSRMLS_FETCH();
 
 	y = 0;
 	l = strlen(str);