diff --git a/Makefile b/Makefile
index c73ee42a3e..c31f61d840 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@
 
 # Set the following to `true' to make a debuggable build.
 # Leave this set to `false' for production use.
-DEBUG = false
+DEBUG = true
 
 
 ROOT =		udev
diff --git a/udev.h b/udev.h
index ef7175ea3a..83004bb791 100644
--- a/udev.h
+++ b/udev.h
@@ -26,7 +26,10 @@
 
 #ifdef DEBUG
 #include <syslog.h>
-	#define dbg(format, arg...) do { log_message (LOG_DEBUG, __FUNCTION__ ": " format, ## arg); } while (0)
+#define dbg(format, arg...)								\
+	do {										\
+		log_message (LOG_DEBUG , "%s: " format , __FUNCTION__ , ## arg);	\
+	} while (0)
 #else
 	#define dbg(format, arg...) do { } while (0)
 #endif
@@ -37,5 +40,8 @@
 #define MKNOD		"/bin/mknod"
 
 
+extern int log_message (int level, const char *format, ...);
+
+
 #endif