diff --git a/tests/__init__.py b/tests/__init__.py
index ef37da5..8effcb0 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,7 +1,13 @@
-def normalize_item(x):
-    return set(x for x in x.raw.splitlines() if
-               not x.startswith('X-RADICALE-NAME') and
-               not x.startswith('PRODID'))
+def normalize_item(item):
+    rv = set()
+    for line in item.raw.splitlines():
+        line = line.strip()
+        line = line.strip().split(u':', 1)
+        line[0] = line[0].split(';')[0]
+        if line[0] in ('X-RADICALE-NAME', 'PRODID', 'REV'):
+            continue
+        rv.add(u':'.join(line))
+    return rv
 
 
 def assert_item_equals(a, b):