diff --git a/share/completions/git.fish b/share/completions/git.fish
index 9814d5ee2..ec482ceb8 100644
--- a/share/completions/git.fish
+++ b/share/completions/git.fish
@@ -621,7 +621,9 @@ function __fish_git_aliases
     __fish_git config -z --get-regexp '^alias\.' 2>/dev/null | while read -lz key value
         begin
             set -l name (string replace -r '^.*\.' '' -- $key)
-            printf "%s\t%s\n" $name "Alias for $value"
+            # Only use the first line of the value as the description.
+            set -l val (printf '%s\n' $value)[1]
+            printf "%s\t%s\n" $name "Alias for $val"
         end
     end
 end