diff --git a/hooks/pre-commit.hook b/hooks/pre-commit.hook
index 20de83f..ca516ef 100755
--- a/hooks/pre-commit.hook
+++ b/hooks/pre-commit.hook
@@ -17,16 +17,19 @@ fi
 for file in `git diff --cached --name-only --diff-filter=ACMR | grep $exts`
 do
   echo "Formatting $file"
+  # get tmpfile
+  tmpfile="${file//.cpp/.tmp.cpp}"
+  tmpfile="${file//.h/.tmp.h}"
   # Get the file from index
-  git show ":$file" > "$file.tmp"
+  git show ":$file" > "$tmpfile"
   # Format it
-  "$formatter" --no-backup -c AfRApay.MateCard/.uncrustify.cfg "$file.tmp"
+  "$formatter" --no-backup -c AfRApay.MateCard/.uncrustify.cfg "$tmpfile"
   # Create a blob object from the formatted file
-  hash=`git hash-object -w "$file.tmp"`
+  hash=`git hash-object -w "$tmpfile"`
   # Add it back to index
   git update-index --add --cacheinfo 100644 "$hash" "$file"
   # Remove the tmp file
-  rm "$file.tmp"
+  rm "$tmpfile"
 done
 
 # If no files left in index after formatting - fail