diff --git a/waybar/config b/waybar/config
index d6349e5..b5e4f1b 100644
--- a/waybar/config
+++ b/waybar/config
@@ -28,7 +28,7 @@
     "clock": {
         "interval": 1,
         "format": "{:%a %Y-%m-%d %H:%M:%OS}",
-        "tooltip-format": "<tt>{:W%U} {calendar}</tt>",
+        "tooltip-format": "<tt>W{:%U} {calendar}</tt>",
     },
     "battery": {
         "states": {