diff --git a/README.md b/README.md
index a71ff33..78239a1 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ A simple python package for drawing attractive chemical reaction energy level di
 
 What do I need?
 ------
-`rxnlvl` requires Python 2.x or later.
+`rxnlvl` supported Python 2.x and Python3.x.
 
 How do I work it?
 ------
diff --git a/rxnlvl/__init__.py b/rxnlvl/__init__.py
index e32e638..acbcc23 100644
--- a/rxnlvl/__init__.py
+++ b/rxnlvl/__init__.py
@@ -114,7 +114,7 @@ def deriveBufferedEnergyRange(self, bufsize):
 
     def write(self):
         # Determine absolute path
-        path = os.path.dirname(unicode(__file__,sys.getfilesystemencoding()))
+        path = os.path.dirname(__file__.encode(sys.getfilesystemencoding()).decode())
         svgstring = ''
         # Write the preamble for the svg format
         svgstring += appendTextFile('{}/dat/svgprefix.frag'.format(str(path)))