diff --git a/pkg/cmd/discussion/shared/categories.go b/pkg/cmd/discussion/shared/categories.go
index a7893f229..5e0ca33cd 100644
--- a/pkg/cmd/discussion/shared/categories.go
+++ b/pkg/cmd/discussion/shared/categories.go
@@ -28,5 +28,5 @@ func MatchCategory(input string, categories []client.DiscussionCategory) (*clien
 		slugs[i] = c.Slug
 	}
 	slices.Sort(slugs)
-	return nil, fmt.Errorf("unknown category: %q; must be one of %v", input, slugs)
+	return nil, fmt.Errorf("unknown category: %q; must be one of %q", input, slugs)
 }