diff --git a/macho-go/pkg/ios/macho/objc.go b/macho-go/pkg/ios/macho/objc.go
index ec01d8d..d240514 100644
--- a/macho-go/pkg/ios/macho/objc.go
+++ b/macho-go/pkg/ios/macho/objc.go
@@ -325,7 +325,7 @@ func (mc *MachoContext) ReworkForObjc() {
 			}
 		}
 
-		encode_movz((data_end - text_start) + (shellcode_size - len(shellcode_start)))
+		encode_movz((data_end - text_start) + (shellcode_size - 7))
 
 		shellcode_offset = text_start - shellcode_size
 		shellcode_bytes := append(shellcode_start, offset...)