diff --git a/cpu.h b/cpu.h
index 113292b..e4cdfb1 100644
--- a/cpu.h
+++ b/cpu.h
@@ -119,7 +119,7 @@ s32 translate_block_arm(u32 pc, translation_region_type translation_region,
 s32 translate_block_thumb(u32 pc, translation_region_type translation_region,
  u32 smc_enable);
 
-#ifdef PSP_BUILD
+#if defined(PSP_BUILD) || defined (_3DS)
 
 #define ROM_TRANSLATION_CACHE_SIZE (1024 * 512 * 4)
 #define RAM_TRANSLATION_CACHE_SIZE (1024 * 384)