diff --git a/src/portable/mentor/musb/musb_tm4c.h b/src/portable/mentor/musb/musb_tm4c.h
index 65a1751..fb17bdb 100644
--- a/src/portable/mentor/musb/musb_tm4c.h
+++ b/src/portable/mentor/musb/musb_tm4c.h
@@ -33,7 +33,8 @@
 
 #if CFG_TUSB_MCU == OPT_MCU_TM4C123
   #include "TM4C123.h"
-//#elif CFG_TUSB_MCU == OPT_MCU_TM4C129
+#elif CFG_TUSB_MCU == OPT_MCU_TM4C129
+  #include "TM4C129.h"
 #else
   #error "Unsupported MCUs"
 #endif