diff --git a/git-hooks.md b/git-hooks.md
index ea7fd36..62322b7 100644
--- a/git-hooks.md
+++ b/git-hooks.md
@@ -1,4 +1,12 @@
-Put the following in `.git/modules/public/hooks/pre-commit`:
+Put the following in `.git/hooks/pre-commit`:
+
+```shell
+#!/bin/sh
+
+for file in $(git status --porcelain --untracked=all | cut -b 4- | grep "\.png$") ; do pngcrush -brute -ow $file; done
+```
+
+And in `.git/modules/public/hooks/pre-commit`:
 
 ```shell
 #!/bin/sh