diff --git a/source/crypto.c b/source/crypto.c
index 21968f5..ed0f3a7 100755
--- a/source/crypto.c
+++ b/source/crypto.c
@@ -469,7 +469,7 @@ void kernel9Loader(Arm9Bin *arm9Section)
         //Calculate the size of the ARM9 binary
         u32 arm9BinSize = 0;
         //http://stackoverflow.com/questions/12791077/atoi-implementation-in-c
-        for(u8 *tmp = arm9Section->size; *tmp != 0; tmp++)
+        for(char *tmp = arm9Section->size; *tmp != 0; tmp++)
             arm9BinSize = (arm9BinSize << 3) + (arm9BinSize << 1) + *tmp - '0';
 
         //Decrypt ARM9 binary
diff --git a/source/crypto.h b/source/crypto.h
index 78696a8..a3b958c 100755
--- a/source/crypto.h
+++ b/source/crypto.h
@@ -164,7 +164,7 @@ typedef struct Arm9Bin {
     uint8_t keyX[0x10];
     uint8_t keyY[0x10];
     uint8_t ctr[0x10];
-    uint8_t size[8];
+    char size[8];
     uint8_t reserved[8];
     uint8_t ctlBlock[0x10];
     char magic[4];