diff --git a/src/setproctitle.c b/src/setproctitle.c
index 399205c064db46be22c39b6afed6ac8c50dc7238..99bccf2c0c38dbcf4a7d51f64e2cf380519772d3 100644
--- a/src/setproctitle.c
+++ b/src/setproctitle.c
@@ -80,7 +80,7 @@ static int spt_clearenv(void) {
 	return 0;
 #else
 	extern char **environ;
-	char **tmp;
+	static char **tmp;
 
 	if (!(tmp = malloc(sizeof *tmp)))
 		return errno;