diff --git a/doc/ack.txt b/doc/ack.txt
index 22e884bc..5091dba8 100644
--- a/doc/ack.txt
+++ b/doc/ack.txt
@@ -270,7 +270,7 @@ If you're using this plugin with ag, The Silver Searcher, bear in mind that:
     - It ignores file patterns from your .gitignore and .hgignore.
 
     - If there are other files in your source repository you don't wish to
-      search, you can add their patterns to an .agignore file.
+      search, you can add their patterns to an .ignore file.
 
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 ISSUES AND FAQ                                            *ack-issues-and-faq*