diff --git a/tests/convert_precision.py b/tests/convert_precision.py
index cf610d3b01..625fe49ca9 100755
--- a/tests/convert_precision.py
+++ b/tests/convert_precision.py
@@ -1,4 +1,4 @@
-#!/bin/sh env python
+#!/usr/bin/env python
 
 import os
 import glob
@@ -14,10 +14,10 @@ for adir in dirs:
     if len(files) > 0:
 
         files = files[0]
-        with open(files,'r') as fh:
+        with open(files, 'r') as fh:
             intxt = fh.read()
-        intxt = intxt.replace('14.8E','12.6E')
-        with open(files,'w') as fh:
+        intxt = intxt.replace('14.8E', '12.6E')
+        with open(files, 'w') as fh:
             fh.write(intxt)
 
     os.chdir('..')