diff --git a/components/tachart/tatools.pas b/components/tachart/tatools.pas
index b8f5985a0e..329223c217 100644
--- a/components/tachart/tatools.pas
+++ b/components/tachart/tatools.pas
@@ -1442,6 +1442,7 @@ end;
 
 procedure TDataPointHintTool.KeyUp(APoint: TPoint);
 begin
+  Unused(APoint);
   HideHint;
 end;
 
@@ -1502,6 +1503,7 @@ end;
 
 procedure TDataPointHintTool.MouseUp(APoint: TPoint);
 begin
+  Unused(APoint);
   HideHint;
 end;