diff --git a/source/blender/editors/interface/interface_layout.c b/source/blender/editors/interface/interface_layout.c
index e8974b8571c..216254a0415 100644
--- a/source/blender/editors/interface/interface_layout.c
+++ b/source/blender/editors/interface/interface_layout.c
@@ -2147,7 +2147,11 @@ static void ui_litem_layout_column(uiLayout *litem)
 static RadialDirection ui_get_radialbut_vec(float vec[2], short itemnum)
 {
 	RadialDirection dir;
-	BLI_assert(itemnum < 8);
+
+	if (itemnum < 8) {
+		itemnum %= 8;
+		printf("Warning: Pie menus with more than 8 items are currently unsupported\n");
+	}
 
 	dir = ui_radial_dir_order[itemnum];
 	ui_but_pie_dir(dir, vec);