diff --git a/autoload/gitgutter/diff.vim b/autoload/gitgutter/diff.vim
index d88f8f0..0ed77ed 100644
--- a/autoload/gitgutter/diff.vim
+++ b/autoload/gitgutter/diff.vim
@@ -70,7 +70,7 @@ let s:counter = 0
 "                      grep is available.
 function! gitgutter#diff#run_diff(bufnr, from, preserve_full_diff) abort
   if gitgutter#utility#repo_path(a:bufnr, 0) == -1
-    throw 'gitgutter author fail'
+    throw 'gitgutter path not set'
   endif
 
   if gitgutter#utility#repo_path(a:bufnr, 0) == -2