diff --git a/desmume/src/addons/slot1_r4.cpp b/desmume/src/addons/slot1_r4.cpp
index 93589b98f..c91dc5346 100644
--- a/desmume/src/addons/slot1_r4.cpp
+++ b/desmume/src/addons/slot1_r4.cpp
@@ -19,7 +19,7 @@
 
 #include "../addons.h"
 #include "../registers.h"
-#include "../mmu.h"
+#include "../MMU.h"
 #include "../NDSSystem.h"
 #include <time.h>
 
diff --git a/desmume/src/addons/slot1_retail.cpp b/desmume/src/addons/slot1_retail.cpp
index 1c8dcc2d3..e7b7a5016 100644
--- a/desmume/src/addons/slot1_retail.cpp
+++ b/desmume/src/addons/slot1_retail.cpp
@@ -19,7 +19,7 @@
 
 #include "../addons.h"
 #include "../registers.h"
-#include "../mmu.h"
+#include "../MMU.h"
 #include "../NDSSystem.h"
 
 static void info(char *info) { strcpy(info, "Slot1 Retail card emulation"); }