diff --git a/lib/wibox/widget/imagebox.lua b/lib/wibox/widget/imagebox.lua
index 24edbfc1..e973fc02 100644
--- a/lib/wibox/widget/imagebox.lua
+++ b/lib/wibox/widget/imagebox.lua
@@ -104,7 +104,7 @@ function imagebox:set_image(image)
     if self._private.image == image then
         -- The image could have been modified, so better redraw
         self:emit_signal("widget::redraw_needed")
-        return
+        return true
     end
 
     self._private.image = image