diff --git a/src/calibre/ebooks/djvu/__init__.py b/src/calibre/ebooks/djvu/__init__.py
index e1fc2a7e9a..5f81be77d4 100644
--- a/src/calibre/ebooks/djvu/__init__.py
+++ b/src/calibre/ebooks/djvu/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env  python2
+#!/usr/bin/env python2
 from __future__ import (unicode_literals, division, absolute_import,
                         print_function)
 
diff --git a/src/calibre/ebooks/djvu/djvu.py b/src/calibre/ebooks/djvu/djvu.py
index bab1f9b147..004f4b094c 100644
--- a/src/calibre/ebooks/djvu/djvu.py
+++ b/src/calibre/ebooks/djvu/djvu.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python2
+#!/usr/bin/env python2
 # coding: utf-8
 from __future__ import (unicode_literals, division, absolute_import,
                         print_function)
diff --git a/src/calibre/ebooks/djvu/djvubzzdec.py b/src/calibre/ebooks/djvu/djvubzzdec.py
index df79e88789..a3a5592a90 100644
--- a/src/calibre/ebooks/djvu/djvubzzdec.py
+++ b/src/calibre/ebooks/djvu/djvubzzdec.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python2
+#!/usr/bin/env python2
 # coding: utf-8
 from __future__ import (unicode_literals, division, absolute_import,
                         print_function)