diff --git a/source/blender/editors/space_node/node_ops.c b/source/blender/editors/space_node/node_ops.c
index aa29f3e3d14..bda4be9719a 100644
--- a/source/blender/editors/space_node/node_ops.c
+++ b/source/blender/editors/space_node/node_ops.c
@@ -137,7 +137,7 @@ void node_keymap(struct wmKeyConfig *keyconf)
 		RNA_float_set(kmi->ptr, "factor", 0.83333f);
 	kmi= WM_keymap_add_item(keymap, "NODE_OT_backimage_zoom", VKEY, KM_PRESS, KM_ALT, 0);
 		RNA_float_set(kmi->ptr, "factor", 1.2f);
-	WM_keymap_add_item(keymap, "NODE_OT_backimage_sample", ACTIONMOUSE, KM_PRESS, 0, 0);
+	WM_keymap_add_item(keymap, "NODE_OT_backimage_sample", ACTIONMOUSE, KM_PRESS, KM_ALT, 0);
 	
 	WM_keymap_add_item(keymap, "NODE_OT_link_make", FKEY, KM_PRESS, 0, 0);
 	RNA_boolean_set(WM_keymap_add_item(keymap, "NODE_OT_link_make", FKEY, KM_PRESS, KM_CTRL, 0)->ptr, "replace", 1);