diff --git a/backends/platform/ds/arm9/makefile b/backends/platform/ds/arm9/makefile
index fac50178b4e..78638bdab86 100644
--- a/backends/platform/ds/arm9/makefile
+++ b/backends/platform/ds/arm9/makefile
@@ -297,14 +297,14 @@ ifdef USE_PROFILER
 endif
 
 
-DATA_OBJS :=
+DATA_OBJS := \
 	$(portdir)/data/icons.o \
 	$(portdir)/data/keyboard.o \
 	$(portdir)/data/keyboard_pal.o \
 	$(portdir)/data/default_font.o \
 	$(portdir)/data/8x8font_tga.o
 
-FAT_OBJS :=
+FAT_OBJS := \
 	$(portdir)/source/fat/disc_io.o \
 	$(portdir)/source/fat/gba_nds_fat.o \
 	$(portdir)/source/fat/io_fcsr.o \
diff --git a/backends/platform/ds/arm9/source/portdefs.h b/backends/platform/ds/arm9/source/portdefs.h
index bdb42993d13..c08f994e8e1 100644
--- a/backends/platform/ds/arm9/source/portdefs.h
+++ b/backends/platform/ds/arm9/source/portdefs.h
@@ -26,6 +26,9 @@
 #ifndef _PORTDEFS_H_
 #define _PORTDEFS_H_
 
+// Include ndstypes.h for uint16 etc. typedefs
+#include "nds/ndstypes.h"
+
 // Somebody removed these from scummsys.h, but they're still required, so I'm
 // adding them here in the hope that they'll stay.
 #include <stdio.h>