diff --git a/Shared/sdk/CFastList.h b/Shared/sdk/CFastList.h
index 7797e70cca..30f65a1eb0 100644
--- a/Shared/sdk/CFastList.h
+++ b/Shared/sdk/CFastList.h
@@ -307,6 +307,8 @@ class CFastList
 template <class T, class U>
 bool ListContains(const CFastList<T*>& itemList, const U& item)
 {
+    if (itemList.empty())
+        return false;
     return itemList.contains(item);
 }
 
diff --git a/Shared/sdk/SharedUtil.Misc.h b/Shared/sdk/SharedUtil.Misc.h
index 0d17a2f155..d64f155a7c 100644
--- a/Shared/sdk/SharedUtil.Misc.h
+++ b/Shared/sdk/SharedUtil.Misc.h
@@ -344,13 +344,14 @@ namespace SharedUtil
     template <class TL, class T>
     bool ListContains(const TL& itemList, const T& item)
     {
+        if (itemList.empty())
+            return false;
         typename TL ::const_iterator it = itemList.begin();
         for (; it != itemList.end(); ++it)
             if (item == *it)
                 return true;
         return false;
     }
-
     // Add item if it does not aleady exist in itemList
     template <class TL, class T>
     void ListAddUnique(TL& itemList, const T& item)