diff --git a/source/arm11/cheat.c b/source/arm11/cheat.c
index 024ab27..40cf552 100644
--- a/source/arm11/cheat.c
+++ b/source/arm11/cheat.c
@@ -406,7 +406,7 @@ static CodeLocation rom_fit_newsize( CodeLocation rom, int realend, int totalsiz
         u32 start = realend - INSTR_SIZE;
         memset( &rom[INSTR_LEN(start)], 0, sznrom-start );
         *newsize = sznrom;
-        return rom + sznrom - ( (totalsize+0x1f) & (~0xf) );
+        return rom + INSTR_LEN( sznrom - ( (totalsize+0x1f) & (~0xf) ) );
     }
     
     return rom + INSTR_LEN( realend );