diff --git a/Units/MMLAddon/mmlpsthread.pas b/Units/MMLAddon/mmlpsthread.pas
index b52fe29..8a63e23 100644
--- a/Units/MMLAddon/mmlpsthread.pas
+++ b/Units/MMLAddon/mmlpsthread.pas
@@ -291,6 +291,7 @@ begin
   MInternet.Free;
   Client.Free;
   Includes.free;
+  Prop.Free;
   inherited Destroy;
 end;