diff --git a/certidude/api/request.py b/certidude/api/request.py
index 97d6ceb..c1af6fc 100644
--- a/certidude/api/request.py
+++ b/certidude/api/request.py
@@ -85,7 +85,7 @@ class RequestListResource(object):
 
                 try:
                     renewal_signature = b64decode(renewal_header)
-                except TypeError, ValueError:
+                except (TypeError, ValueError):
                     logger.error(u"Renewal failed, bad signature supplied for %s", common_name)
                     reasons.append("Renewal failed, bad signature supplied")
                 else:
diff --git a/certidude/api/scep.py b/certidude/api/scep.py
index cf92f58..dff8633 100644
--- a/certidude/api/scep.py
+++ b/certidude/api/scep.py
@@ -139,7 +139,7 @@ class SCEPResource(object):
             signed_certificate = asymmetric.load_certificate(buf)
             content = signed_certificate.asn1.dump()
 
-        except SCEPError, e:
+        except SCEPError as e:
             attr_list.append(cms.CMSAttribute({
                 'type': u"fail_info",
                 'values': ["%d" % e.code]