diff --git a/sample_mm/Makefile b/sample_mm/Makefile
index d0ab237..9a1b3a1 100644
--- a/sample_mm/Makefile
+++ b/sample_mm/Makefile
@@ -26,7 +26,7 @@ OBJECTS = sample_mm.cpp
 ##############################################
 
 OPT_FLAGS = -O3 -funroll-loops -pipe
-GCC4_FLAGS = -fvisibility=hidden -fvisibility-inlines-hidden
+GCC4_FLAGS = -fvisibility=hidden -fvisibility-inlines-hidden -std=c++11
 DEBUG_FLAGS = -g -ggdb3 -D_DEBUG
 CPP = gcc
 CPP_OSX = clang
diff --git a/sample_mm/sample_mm.cpp b/sample_mm/sample_mm.cpp
index 77a2f77..c5520ff 100644
--- a/sample_mm/sample_mm.cpp
+++ b/sample_mm/sample_mm.cpp
@@ -28,7 +28,6 @@ SH_DECL_HOOK5(IServerGameClients, ClientConnect, SH_NOATTRIB, 0, bool, edict_t *
 SH_DECL_HOOK2(IGameEventManager2, FireEvent, SH_NOATTRIB, 0, bool, IGameEvent *, bool);
 
 #if SOURCE_ENGINE >= SE_ORANGEBOX
-SH_DECL_HOOK2_void(IServerGameClients, NetworkIDValidated, SH_NOATTRIB, 0, const char *, const char *);
 SH_DECL_HOOK2_void(IServerGameClients, ClientCommand, SH_NOATTRIB, 0, edict_t *, const CCommand &);
 #else
 SH_DECL_HOOK1_void(IServerGameClients, ClientCommand, SH_NOATTRIB, 0, edict_t *);