diff --git a/source/arm9/dev.c b/source/arm9/dev.c
index 0860185..ed0b8f2 100644
--- a/source/arm9/dev.c
+++ b/source/arm9/dev.c
@@ -432,7 +432,7 @@
 		
 		sector += crypt_size;
 		count -= crypt_size;
-		buf += crypt_size;
+		buf += crypt_size<<9;
 	} while(count);
 	
 	free(crypto_buf);