diff --git a/glad/__main__.py b/glad/__main__.py
index 4b01eb16..1dbae4b0 100644
--- a/glad/__main__.py
+++ b/glad/__main__.py
@@ -40,7 +40,7 @@ def get_spec(value, reproducible=False):
         if reproducible:
             logger.info('reproducible build, using packaged specification: \'%s.xml\'', value)
             try:
-                return spec_cls.from_file(glad.files.open_local(value + '.xml'))
+                return spec_cls.from_file(glad.files.open_local(value + '.xml', 'rb'))
             except IOError:
                 raise ValueError('unable to open reproducible copy of {}.xml, '
                                  'try dropping --reproducible'.format(value))
diff --git a/glad/files/gl.xml b/glad/files/gl.xml
index 60696d62..d5f33ba2 100644
--- a/glad/files/gl.xml
+++ b/glad/files/gl.xml
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <registry>
     <comment>
 Copyright 2013-2020 The Khronos Group Inc.