diff --git a/setup.py b/setup.py
index f9524f5a5a..fb51067340 100644
--- a/setup.py
+++ b/setup.py
@@ -9,17 +9,12 @@ info = eval(file('__tryton__.py').read())
 
 requires = []
 for dep in info.get('depends', []):
-    match = re.compile(
-            '(ir|res|workflow|webdav)((\s|$|<|>|<=|>=|==|!=).*?$)').match(dep)
-    if match:
-        continue
-    else:
-        dep = 'trytond_' + dep
-    requires.append(dep)
+    if not re.match(r'(ir|res|workflow|webdav)(\W|$)', dep):
+        requires.append('trytond_' + dep)
 
 major_version, minor_version, _ = info.get('version', '0.0.1').split('.', 2)
 requires.append('trytond >= %s.%s' % (major_version, minor_version))
-requires.append('trytond < %s.%s' % (major_version, str(int(minor_version) + 1)))
+requires.append('trytond < %s.%s' % (major_version, int(minor_version) + 1))
 
 setup(name='trytond_google_maps',
     version=info.get('version', '0.0.1'),