diff --git a/src/libudev/libudev.c b/src/libudev/libudev.c
index c451a616ff..f67b8fccc4 100644
--- a/src/libudev/libudev.c
+++ b/src/libudev/libudev.c
@@ -27,9 +27,6 @@
  */
 struct udev {
         unsigned n_ref;
-        void (*log_fn)(struct udev *udev,
-                       int priority, const char *file, int line, const char *fn,
-                       const char *format, va_list args);
         void *userdata;
 };