diff --git a/source/blender/editors/space_image/space_image.c b/source/blender/editors/space_image/space_image.c
index 7001677b4d8..cc8940201e2 100644
--- a/source/blender/editors/space_image/space_image.c
+++ b/source/blender/editors/space_image/space_image.c
@@ -374,9 +374,11 @@ static void image_refresh(const bContext *C, ScrArea *sa)
 	/* check if we have to set the image from the editmesh */
 	if (ima && (ima->source == IMA_SRC_VIEWER && sima->mode == SI_MODE_MASK)) {
 		if (sima->lock) {
-			Mask *mask = ED_space_image_get_mask(sima);
-			if (mask) {
-				ED_node_composite_job(C, scene->nodetree, scene);
+			if (scene->nodetree) {
+				Mask *mask = ED_space_image_get_mask(sima);
+				if (mask) {
+					ED_node_composite_job(C, scene->nodetree, scene);
+				}
 			}
 		}
 	}