diff --git a/src/x9d/diskio.cpp b/src/x9d/diskio.cpp
index ba29ef977..e2af08538 100644
--- a/src/x9d/diskio.cpp
+++ b/src/x9d/diskio.cpp
@@ -985,10 +985,6 @@ void sdPoll10ms()
         }
 }
 
-void sdInit()
-{
-}
-
 FATFS g_FATFS_Obj;
 
 void sdMountPoll()