diff --git a/l4d1_signature_linux.h b/l4d1_signature_linux.h
index 8983d62..54dec25 100644
--- a/l4d1_signature_linux.h
+++ b/l4d1_signature_linux.h
@@ -43,7 +43,7 @@ char* players_org2 = NULL;
 
 //CBaseServer::SetReservationCookie(unsigned long long, char  const*, ...)
 //function in engine.so
-const char* unreserved = "\x1B\x55\x89\xE5\x57\x56\x53\x81\xEC\x4C\x01\x00\x00\xE8\xC3\xC3\xC3\xC3\x81\xC3\xC3\xC3\xC3\x00\x8B\xC3\xC3\x8B";
+const char* unreserved = "\x1F\x55\x89\xE5\x57\x56\x53\x81\xEC\x4C\x01\x00\x00\xE8\xC3\xC3\xC3\xC3\x81\xC3\xC3\xC3\xC3\x00\x8B\x75\xC3\x8B\x55\xC3\x8B\x45";
 const char* unreserved_new = "\x01\x00\xC3";
 char* unreserved_org = NULL;