diff --git a/hooks/pre-commit b/hooks/pre-commit
old mode 100755
new mode 100644
index 21d8ee91c..f26347055
--- a/hooks/pre-commit
+++ b/hooks/pre-commit
@@ -12,7 +12,7 @@ fi
 
 echo "Begin linting step using yapf formatting"
 linterrorfound=0
-for stagedfile in $(git diff --name-only --cached | grep *.py)
+for stagedfile in $(git diff --name-only --cached | grep ".*\.py")
 do
     yapf --diff --style .style.yapf $stagedfile
     ret=$?