diff --git a/home-environments/radio.scm b/home-environments/radio.scm
index 8a656a3..e69f1c3 100644
--- a/home-environments/radio.scm
+++ b/home-environments/radio.scm
@@ -253,7 +253,7 @@
 
                        #|Fish completion|#
                        ("fish_complete_path"
-                        . ,(format #f "$fish_complete_path~@{ ~a/fish/completions}"
+                        . ,(format #f "$fish_complete_path~@{:~a/fish/completions~}"
                                       "$HOME/.guix-home/profile/share"))))
                     (aliases
                      `(#|Common aliases|#