diff --git a/Makefile b/Makefile
index 0f0078b..5467077 100644
--- a/Makefile
+++ b/Makefile
@@ -35,7 +35,7 @@ CFLAGS	:=	-g -Wall -Wno-sizeof-array-div -Werror -mword-relocations \
 			-ffunction-sections -fdata-sections \
 			$(ARCH) $(BUILD_CFLAGS)
 
-CFLAGS	+=	$(INCLUDE) -DARM11 -D_3DS -DCITRO3D_BUILD
+CFLAGS	+=	$(INCLUDE) -D__3DS__ -DCITRO3D_BUILD
 
 CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
 
diff --git a/include/c3d/types.h b/include/c3d/types.h
index bfabbf8..1ee8334 100644
--- a/include/c3d/types.h
+++ b/include/c3d/types.h
@@ -1,5 +1,5 @@
 #pragma once
-#ifdef _3DS
+#if defined(__3DS__) || defined(_3DS)
 #include <3ds.h>
 #else
 #include <stdbool.h>
diff --git a/test/3ds/Makefile b/test/3ds/Makefile
index dc61171..abf676d 100644
--- a/test/3ds/Makefile
+++ b/test/3ds/Makefile
@@ -47,10 +47,10 @@ ICON            :=
 ARCH     := -march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
 
 CFLAGS   := -g -Wall -O3 -mword-relocations \
-            -fomit-frame-pointer -ffunction-sections \
+            -ffunction-sections \
             $(ARCH)
 
-CFLAGS   +=  $(INCLUDE) -DARM11 -D_3DS
+CFLAGS   +=  $(INCLUDE) -D__3DS__
 
 CXXFLAGS := $(CFLAGS) -fno-rtti -std=gnu++11