diff --git a/fuzzer/Fuzzer.java b/fuzzer/Fuzzer.java
index aab93634cde85b64a49767d30054c19c7ff2a4e0..3c17a8bd33a136c489b97d447167c35a84147afe 100644
--- a/fuzzer/Fuzzer.java
+++ b/fuzzer/Fuzzer.java
@@ -24,7 +24,7 @@ public class Fuzzer {
             }
             pw.println("RET R0");
             */
-            
+            pw.prinln("RET R0")
         }catch (Exception e){
             e.printStackTrace(System.err);
             System.exit(1);
diff --git a/src/machine-vuln4.c b/src/machine-vuln4.c
index 4cc75d9ed51755d563e1ad5a205b25a2bc864d13..5151c9856976d23440dee3d455952fb2dc3d61dd 100644
--- a/src/machine-vuln4.c
+++ b/src/machine-vuln4.c
@@ -58,13 +58,13 @@ static void machine_init(void){
   memory = malloc(sizeof(int32_t)*MEMORY_SIZE);
   regs = malloc(sizeof(int32_t)*NUM_REGS);
   memset(memory,0,sizeof(int32_t)*MEMORY_SIZE);
-  memset(regs,0,sizeof(int32_t)*NUM_REGS);
+  memset(regs,512,sizeof(int32_t)*NUM_REGS);
   count = 0;
 }
 
 static void machine_free(void){
   free(memory);
-  //free(regs);
+  free(regs);
 }
 
 static void do_add(unsigned int dest, unsigned int src1, unsigned int src2)