diff --git a/source/common.h b/source/common.h
index 65f9712..889e512 100644
--- a/source/common.h
+++ b/source/common.h
@@ -57,6 +57,11 @@
 // buffer area defines (in use by cia.c)
 #define GAME_BUFFER         ((u8*)0x21500000)
 #define GAME_BUFFER_SIZE    (0x100000)
+// buffer area defines (in use by image.c, for RAMdrive)
+#define RAMDRV_BUFFER_O3DS  ((u8*)0x22200000) // in O3DS FCRAM
+#define RAMDRV_SIZE_O3DS    (0x01C00000) // 28MB
+#define RAMDRV_BUFFER_N3DS  ((u8*)0x28000000) // in N3DS FCRAM
+#define RAMDRV_SIZE_N3DS    (0x08000000) // 128MB
 
 inline u32 strchrcount(const char* str, char symbol) {
     u32 count = 0;
diff --git a/source/fatfs/image.c b/source/fatfs/image.c
index 428ce1d..3a92a7f 100644
--- a/source/fatfs/image.c
+++ b/source/fatfs/image.c
@@ -2,11 +2,6 @@
 #include "platform.h"
 #include "ff.h"
 
-#define RAMDRV_BUFFER_O3DS ((u8*)0x22200000) // in O3DS FCRAM
-#define RAMDRV_SIZE_O3DS (0x01C00000) // 28MB
-#define RAMDRV_BUFFER_N3DS ((u8*)0x28000000) // in N3DS FCRAM
-#define RAMDRV_SIZE_N3DS (0x08000000) // 128MB
-
 static u8* ramdrv_buffer = NULL;
 static u32 ramdrv_size = 0;