diff --git a/include/405_dimm.h b/include/405_dimm.h
deleted file mode 100644
index 103a34909..000000000
--- a/include/405_dimm.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#ifndef _405_dimm_h_
-#define _405_dimm_h_
-long int walnut_dimm(void);
-#endif