diff --git a/atari/plot/plotter_vdi.c b/atari/plot/plotter_vdi.c
index e79647408..652fa7434 100755
--- a/atari/plot/plotter_vdi.c
+++ b/atari/plot/plotter_vdi.c
@@ -315,8 +315,10 @@ static int lock( GEM_PLOTTER self )
 	self->flags |= PLOT_FLAG_LOCKED;
 	if( !wind_update(BEG_UPDATE|0x100) )
 		return(0);
-	if( !wind_update(BEG_MCTRL|0x100) )
-		return(0);
+	if( !wind_update(BEG_MCTRL|0x100) ){
+		wind_update(END_UPDATE);
+		return(0);
+	}
 	graf_mouse(M_OFF, NULL);
 	return( 1 );
 }