diff --git a/libmproxy/contentviews.py b/libmproxy/contentviews.py
index 9af080335..8d5aadfce 100644
--- a/libmproxy/contentviews.py
+++ b/libmproxy/contentviews.py
@@ -515,6 +515,14 @@ def get_by_shortcut(c):
             return i
 
 
+def add(obj):
+    for i in views:
+        if i.name == obj.name:
+            raise ContentViewException("Duplicate view: " + obj.name)
+
+    views.append(obj)
+
+
 def get(name):
     for i in views:
         if i.name == name:
diff --git a/test/test_contentview.py b/test/test_contentview.py
index 976085209..68272fca3 100644
--- a/test/test_contentview.py
+++ b/test/test_contentview.py
@@ -210,6 +210,19 @@ Larry
         assert "decoded gzip" in r[0]
         assert "Raw" in r[0]
 
+    def test_add_cv(self):
+        class TestContentView(cv.View):
+            name = "test"
+
+        tcv = TestContentView()
+        cv.add(tcv)
+
+        tutils.raises(
+            ContentViewException,
+            cv.add,
+            tcv
+        )
+
 
 if pyamf:
     def test_view_amf_request():