diff --git a/src/textual/widget.py b/src/textual/widget.py
index 8ab34922a..cc442ec78 100644
--- a/src/textual/widget.py
+++ b/src/textual/widget.py
@@ -174,8 +174,8 @@ class Widget(DOMNode):
                 style=renderable_text_style,
             )
 
-        # if styles.opacity:
-        #     renderable = Opacity(renderable, opacity=styles.opacity)
+        if styles.opacity:
+            renderable = Opacity(renderable, opacity=styles.opacity)
 
         return renderable