diff --git a/source/blender/editors/space_sequencer/sequencer_view.c b/source/blender/editors/space_sequencer/sequencer_view.c
index fa39003bd55..d500bef4f02 100644
--- a/source/blender/editors/space_sequencer/sequencer_view.c
+++ b/source/blender/editors/space_sequencer/sequencer_view.c
@@ -162,8 +162,12 @@ static void sample_exit(bContext *C, wmOperator *op)
 static int sample_invoke(bContext *C, wmOperator *op, wmEvent *event)
 {
 	ARegion *ar = CTX_wm_region(C);
+	SpaceSeq *sseq = CTX_wm_space_seq(C);
 	ImageSampleInfo *info;
 
+	if (sseq->mainb != SEQ_DRAW_IMG_IMBUF)
+		return OPERATOR_CANCELLED;
+
 	info = MEM_callocN(sizeof(ImageSampleInfo), "ImageSampleInfo");
 	info->art = ar->type;
 	info->draw_handle = ED_region_draw_cb_activate(ar->type, sample_draw, info, REGION_DRAW_POST_PIXEL);