diff --git a/core/ConVarManager.cpp b/core/ConVarManager.cpp
index 4e48b6a9..48814442 100644
--- a/core/ConVarManager.cpp
+++ b/core/ConVarManager.cpp
@@ -415,6 +415,9 @@ void ConVarManager::AddConVarToPluginList(IPluginContext *pContext, const ConVar
 	{
 		pConVarList = new ConVarList();
 		plugin->SetProperty("ConVarList", pConVarList);
+	} else if (pConVarList->find(pConVar) != pConVarList->end()) {
+		/* If convar is already in list, then don't add it */
+		return;
 	}
 
 	/* Insert convar into list which is sorted alphabetically */