diff --git a/lcl/interfaces/gtk2/gtk2proc.inc b/lcl/interfaces/gtk2/gtk2proc.inc
index f6b3fb1d5e..0a1b780099 100644
--- a/lcl/interfaces/gtk2/gtk2proc.inc
+++ b/lcl/interfaces/gtk2/gtk2proc.inc
@@ -4503,6 +4503,7 @@ begin
     MouseCaptureIndex:=0;
 end;
 
+{$IFDEF GTK2_USE_OLD_CAPTURE}
 procedure CaptureMouseForWidget(Widget: PGtkWidget; Owner: TMouseCaptureType);
 var
   CaptureWidget: PGtkWidget;
@@ -4543,6 +4544,7 @@ begin
     gtk_grab_add(CaptureWidget);
   end;
 end;
+{$ENDIF}
 
 function GetDefaultMouseCaptureWidget(Widget: PGtkWidget
   ): PGtkWidget;
diff --git a/lcl/interfaces/gtk2/gtk2proc.pp b/lcl/interfaces/gtk2/gtk2proc.pp
index dc3dfa0cd2..8f5fab0502 100644
--- a/lcl/interfaces/gtk2/gtk2proc.pp
+++ b/lcl/interfaces/gtk2/gtk2proc.pp
@@ -462,7 +462,9 @@ function TranslateGdkPointToClientArea(SourceWindow: PGdkWindow;
 function SubtractScoll(AWidget: PGtkWidget; APosition: TPoint): TPoint;
 
 // mouse capturing
+{$IFDEF GTK2_USE_OLD_CAPTURE}
 procedure CaptureMouseForWidget(Widget: PGtkWidget; Owner: TMouseCaptureType);
+{$ENDIF}
 function GetDefaultMouseCaptureWidget(Widget: PGtkWidget): PGtkWidget;
 procedure ReleaseMouseCapture;
 procedure ReleaseCaptureWidget(Widget : PGtkWidget);