diff --git a/doxygen.py b/doxygen.py
index 579b77cf8..5a1e46ca2 100644
--- a/doxygen.py
+++ b/doxygen.py
@@ -107,9 +107,8 @@ def DoxyfileParse(file_contents, conf_dir, data=None):
                 if nextfile in data[key]:
                     raise Exception("recursive @INCLUDE in Doxygen config: " + nextfile)
                 data[key].append(nextfile)
-                fh = open(nextfile, "r")
-                DoxyfileParse(fh.read(), conf_dir, data)
-                fh.close()
+                with open(nextfile, "r") as fh:
+                    DoxyfileParse(fh.read(), conf_dir, data)
             else:
                 append_data(data, key, new_data, token)
                 new_data = True