diff --git a/plugins/include/handles.inc b/plugins/include/handles.inc
index e0c93600..68e437a1 100644
--- a/plugins/include/handles.inc
+++ b/plugins/include/handles.inc
@@ -92,4 +92,5 @@ native Handle:CloneHandle(Handle:hndl, Handle:plugin=INVALID_HANDLE);
  * @param hndl		Handle to test for validity.
  * @return			True if handle is valid, false otherwise.
  */
+#pragma deprecated Do not use this function.
 native bool:IsValidHandle(Handle:hndl);