diff --git a/rtl/inc/monitor.inc b/rtl/inc/monitor.inc
index d6f6212779..b53ba70a3d 100644
--- a/rtl/inc/monitor.inc
+++ b/rtl/inc/monitor.inc
@@ -188,9 +188,12 @@ function MonitorEnter(Const aObject: TObject; aTimeout: Cardinal = INFINITE): Bo
 
 begin
   if atimeout=Infinite then
-    TMonitor.Enter(aObject)
+    begin
+    TMonitor.Enter(aObject);
+    Result:=True;
+    end
   else
-    TMonitor.Enter(aObject,aTimeOut);
+    Result:=TMonitor.Enter(aObject,aTimeOut);
 end;
 
 
@@ -211,14 +214,14 @@ end;
 function MonitorWait(Const aObject: TObject; aTimeout: Cardinal): Boolean;
 
 begin
-  TMonitor.Wait(aObject,aTimeOut);
+  Result:=TMonitor.Wait(aObject,aTimeOut);
 end;
 
 
 function MonitorWait(Const aObject, aLock: TObject; aTimeout: Cardinal): Boolean;
 
 begin
-  TMonitor.Wait(aObject,aLock,aTimeOut);
+  Result:=TMonitor.Wait(aObject,aLock,aTimeOut);
 end;