diff --git a/drivers/serial/dz.h b/drivers/serial/dz.h
index 9674d4e49872..6b34d50bf42d 100644
--- a/drivers/serial/dz.h
+++ b/drivers/serial/dz.h
@@ -124,9 +124,4 @@
 #define DZ_XMIT_SIZE   4096                 /* buffer size */
 #define DZ_WAKEUP_CHARS   DZ_XMIT_SIZE/4
 
-#ifdef MODULE
-int init_module (void)
-void cleanup_module (void)
-#endif
-
 #endif /* DZ_SERIAL_H */