diff --git a/pkgs/by-name/gi/git-bug/package.nix b/pkgs/by-name/gi/git-bug/package.nix
index dc9051dc0c64..a426932eb317 100644
--- a/pkgs/by-name/gi/git-bug/package.nix
+++ b/pkgs/by-name/gi/git-bug/package.nix
@@ -53,6 +53,7 @@ buildGoModule (finalAttrs: {
 
   postInstall = ''
     installShellCompletion \
+      --cmd git-bug \
       --bash misc/completion/bash/git-bug \
       --zsh misc/completion/zsh/git-bug \
       --fish misc/completion/fish/git-bug