diff --git a/components/ideintf/objectinspector.pp b/components/ideintf/objectinspector.pp
index 46dd4fa844..e2485e5a4a 100644
--- a/components/ideintf/objectinspector.pp
+++ b/components/ideintf/objectinspector.pp
@@ -1464,7 +1464,7 @@ function TOICustomPropertyGrid.RealDefaultItemHeight: integer;
 begin
   Result := FDefaultItemHeight;
   if (Result<=0) then
-    Result := Canvas.TextHeight('Hg')*5 div 4 + 2;
+    Result := Canvas.TextHeight('Hg')*5 div 4 + 4;
 end;
 
 function TOICustomPropertyGrid.GetRowByPath(const PropPath: string): TOIPropertyGridRow;