diff --git a/fuzzer/Fuzzer.java b/fuzzer/Fuzzer.java
index 2162ab0848d5b249622ce9bbbe495a6a8d5882e1..99350c6bfa8cc71d1e0f1e33afe1d056ab620834 100644
--- a/fuzzer/Fuzzer.java
+++ b/fuzzer/Fuzzer.java
@@ -24,6 +24,9 @@ public class Fuzzer {
             }
             pw.println("RET R0");
             */
+            pw.println("RET R-1");
+            pw.println("MOV R1 1");
+            pw.println("SUB R0 R0 R1");
             pw.println("RET R0");
         }catch (Exception e){
             e.printStackTrace(System.err);