diff --git a/extensions/sdktools/extension.cpp b/extensions/sdktools/extension.cpp
index 27cc39f3..263fe4d4 100644
--- a/extensions/sdktools/extension.cpp
+++ b/extensions/sdktools/extension.cpp
@@ -164,6 +164,7 @@ void SDKTools::SDK_OnUnload()
 	gameconfs->CloseGameConfigFile(g_pGameConf);
 	playerhelpers->RemoveClientListener(&g_SdkTools);
 	playerhelpers->UnregisterCommandTargetProcessor(this);
+	plsys->RemovePluginsListener(&g_OutputManager);
 
 	SH_REMOVE_HOOK_MEMFUNC(IServerGameDLL, LevelInit, gamedll, this, &SDKTools::LevelInit, true);