diff --git a/shared/nm-utils/nm-udev-utils.c b/shared/nm-utils/nm-udev-utils.c
index bf0ad5b931..1f1811cd9b 100644
--- a/shared/nm-utils/nm-udev-utils.c
+++ b/shared/nm-utils/nm-udev-utils.c
@@ -89,6 +89,7 @@ nm_udev_utils_property_decode (const char *uproperty, char **to_free)
 		return uproperty;
 	}
 
+	*n++ = '\0';
 	return (*to_free = unescaped);
 }