diff --git a/src/udev/udev-config.c b/src/udev/udev-config.c
index 600803f93c..c9fcff7768 100644
--- a/src/udev/udev-config.c
+++ b/src/udev/udev-config.c
@@ -638,7 +638,7 @@ static usec_t extra_timeout_usec(void) {
 
         parsed = true;
 
-        e = getenv("SYSTEMD_UDEV_EXTRA_TIMEOUT_SEC");
+        e = secure_getenv("SYSTEMD_UDEV_EXTRA_TIMEOUT_SEC");
         if (!e)
                 return saved;