diff --git a/vobject/base.py b/vobject/base.py
index 7927467..dc8a27b 100644
--- a/vobject/base.py
+++ b/vobject/base.py
@@ -774,7 +774,7 @@ class NativeError(VObjectError):
 # get a full content line, break it up into group, name, parameters, and value
 patterns['line'] = r"""
 ^ ((?P<group> {name!s})\.)?(?P<name> {name!s}) # name group
-  (?P<params> (?: {param!s} )* )               # params group (may be empty)
+  (?P<params> ;?(?: {param!s} )* )               # params group (may be empty)
 : (?P<value> .* )$                             # value group
 """.format(**patterns)