diff --git a/components/chemtext/source/chemtext.pas b/components/chemtext/source/chemtext.pas
index 37151441b..d3bbf02fa 100644
--- a/components/chemtext/source/chemtext.pas
+++ b/components/chemtext/source/chemtext.pas
@@ -22,7 +22,7 @@ unit chemtext;
 interface
 
 uses
-  LclIntf, LCLType, Types, SysUtils, Classes, Graphics, StdCtrls;
+  LclIntf, LCLType, LCLVersion, Types, SysUtils, Classes, Graphics, StdCtrls;
 
 type
   TChemArrow = (
@@ -38,7 +38,7 @@ type
       {%H-}WithThemeSpace: Boolean); override;
     procedure CalculateSize(out NeededWidth, NeededHeight: Integer);
     procedure DoMeasureTextPosition(var TextTop: integer;
-      var TextLeft: integer); override;
+      var TextLeft: integer); {$IF LCL_FullVersion < 2010000} override; {$IFEND}
   public
     constructor Create(AOwner: TComponent); override;
     procedure Paint; override;