--- a/src/sh4/sh4x86.in	Mon Sep 13 10:13:42 2010 +1000
+++ b/src/sh4/sh4x86.in	Mon Nov 08 18:56:11 2010 +1000
@@ -499,9 +499,9 @@
 uint32_t sh4_translate_end_block_size()
 {
     if( sh4_x86.backpatch_posn <= 3 ) {
-        return EPILOGUE_SIZE + (sh4_x86.backpatch_posn*24);
+        return EPILOGUE_SIZE + (sh4_x86.backpatch_posn*(12+CALL1_PTR_MIN_SIZE));
     } else {
-        return EPILOGUE_SIZE + 72 + (sh4_x86.backpatch_posn-3)*27;
+        return EPILOGUE_SIZE + (3*(12+CALL1_PTR_MIN_SIZE)) + (sh4_x86.backpatch_posn-3)*(15+CALL1_PTR_MIN_SIZE);
     }
 }