diff --git a/src/libudev/libudev-enumerate.c b/src/libudev/libudev-enumerate.c
index 172965511b..6a5f4e025e 100644
--- a/src/libudev/libudev-enumerate.c
+++ b/src/libudev/libudev-enumerate.c
@@ -81,6 +81,8 @@ _public_ struct udev_enumerate *udev_enumerate_new(struct udev *udev)
 {
         struct udev_enumerate *udev_enumerate;
 
+        if (udev == NULL)
+                return NULL;
         udev_enumerate = calloc(1, sizeof(struct udev_enumerate));
         if (udev_enumerate == NULL)
                 return NULL;