diff --git a/source/arm11/cheat.c b/source/arm11/cheat.c
index 6504c94..fc94959 100644
--- a/source/arm11/cheat.c
+++ b/source/arm11/cheat.c
@@ -316,12 +316,13 @@ static CodeLocation rom_fit_newsize( CodeLocation rom, int realend, int totalsiz
         // get the biggest space that all bytes is 0
         CodeLocation found=NULL, current=NULL;
         int szfound=0, szcurrent=0;
+        int reallen = realend / sizeof(instruction_t);
         for( int i=0; i < realend; ++i )
         {
             if( rom[i] == 0 )
             {
                 if( szcurrent == 0 ) current = rom+i;
-                szcurrent++;
+                szcurrent += sizeof(instruction_t);
             }
             else if( szcurrent > 0 )
             {