diff --git a/share/functions/fish_clipboard_copy.fish b/share/functions/fish_clipboard_copy.fish
index 6bb60a473..b6155e85f 100644
--- a/share/functions/fish_clipboard_copy.fish
+++ b/share/functions/fish_clipboard_copy.fish
@@ -1,7 +1,7 @@
 function fish_clipboard_copy
     # Copy the current selection, or the entire commandline if that is empty.
-    set -l cmdline (commandline --current-selection)
-    test -n "$cmdline"; or set cmdline (commandline)
+    set -l cmdline (commandline --current-selection | string collect)
+    test -n "$cmdline"; or set cmdline (commandline | string collect)
     if type -q pbcopy
         printf '%s' $cmdline | pbcopy
     else if set -q WAYLAND_DISPLAY; and type -q wl-copy