diff --git a/components/tachart/tafuncseries.pas b/components/tachart/tafuncseries.pas
index d417179ad4..8a9556be32 100644
--- a/components/tachart/tafuncseries.pas
+++ b/components/tachart/tafuncseries.pas
@@ -350,6 +350,15 @@ type
       out AResults: TNearestPointResults): Boolean;
   end;
 
+  TFitSeriesRange = class(TChartRange)
+  strict private
+    FSeries: TFitSeries;
+  strict protected
+    procedure StyleChanged(ASender: TObject); override;
+  public
+    constructor Create(ASeries: TFitSeries);
+  end;
+
 function DoublePointRotated(AX, AY: Double): TDoublePoint;
 begin
   Result.X := AY;
@@ -385,6 +394,20 @@ begin
     end;
 end;
 
+{ TFitSeriesRange }
+
+constructor TFitSeriesRange.Create(ASeries: TFitSeries);
+begin
+  inherited Create(ASeries.ParentChart);
+  FSeries := ASeries;
+end;
+
+procedure TFitSeriesRange.StyleChanged(ASender: TObject);
+begin
+  FSeries.ExecFit;
+  inherited;
+end;
+
 { TDrawFuncHelper }
 
 procedure TDrawFuncHelper.CalcAt(
@@ -1100,7 +1123,7 @@ constructor TFitSeries.Create(AOwner: TComponent);
 begin
   inherited Create(AOwner);
   FFitEquation := fePolynomial;
-  FFitRange := TChartRange.Create(ParentChart);
+  FFitRange := TFitSeriesRange.Create(Self);
   FDrawFitRangeOnly := true;
   FPen := TChartPen.Create;
   FPen.OnChange := @StyleChanged;
diff --git a/components/tachart/tatypes.pas b/components/tachart/tatypes.pas
index ca83033cda..dde16f5d09 100644
--- a/components/tachart/tatypes.pas
+++ b/components/tachart/tatypes.pas
@@ -68,13 +68,13 @@ type
 
   TChartElement = class(TPersistent)
   strict protected
-    FVisible: Boolean;
-    procedure SetVisible(AValue: Boolean);
-  protected
     FOwner: TCustomChart;
-    function GetOwner: TPersistent; override;
+    FVisible: Boolean;
     procedure InitHelper(var AResult; AClass: TFPCanvasHelperClass);
-    procedure StyleChanged(Sender: TObject);
+    procedure SetVisible(AValue: Boolean);
+    procedure StyleChanged(Sender: TObject); virtual;
+  protected
+    function GetOwner: TPersistent; override;
   public
     constructor Create(AOwner: TCustomChart);
   public