diff --git a/plugins/history-substring-search/README.markdown b/plugins/history-substring-search/README.markdown
index 143b813a..c154afdc 100644
--- a/plugins/history-substring-search/README.markdown
+++ b/plugins/history-substring-search/README.markdown
@@ -1,6 +1,6 @@
 To activate this script, please include it the `plugins` variable within `~/.zshrc`
 
-  `plugins=(git history-substring-search.zsh)`
+  `plugins=(git history-substring-search)`
 
 See the "history-substring-search.zsh" file for more information: