Index: src/OFFile.m
==================================================================
--- src/OFFile.m
+++ src/OFFile.m
@@ -26,10 +26,11 @@
 # include <fat.h>
 # undef BOOL
 #endif
 
 #ifdef OF_NINTENDO_DS
+# include <stdbool.h>
 # include <filesystem.h>
 #endif
 
 #import "OFFile.h"
 #import "OFString.h"