diff --git a/urlclustering/parsedurl.py b/urlclustering/parsedurl.py
index cf74c19..ceaf865 100644
--- a/urlclustering/parsedurl.py
+++ b/urlclustering/parsedurl.py
@@ -33,7 +33,7 @@ def __init__(self, url):
             for i, part in enumerate(elems):
                 sep = '?' if i == 0 else '&'
                 if '=' in part:
-                    par, val = part.split('=')
+                    par, val = part.split('=', 1)
                     self._parts.append((sep, par))
                     self._parts.append(('=', val))
                 else: