diff --git a/src/selmer/filter_parser.clj b/src/selmer/filter_parser.clj
index 0c4ff3c..0e9ecfc 100644
--- a/src/selmer/filter_parser.clj
+++ b/src/selmer/filter_parser.clj
@@ -138,7 +138,9 @@ applied filter."
   "Returns the value of `k` from map `m`, either as a keyword or string lookup."
   (or (get m k)
       (when (keyword? k)
-        (get m (name k)))))
+        (if-let [n (namespace k)]
+          (get m (str n "/" (name k)))
+          (get m (name k))))))
 
 (defn compile-filter-body
   "Turns a string like foo|filter1:x|filter2:y into a fn that expects a
diff --git a/test/selmer/core_test.clj b/test/selmer/core_test.clj
index cd64d94..a5dfbd2 100644
--- a/test/selmer/core_test.clj
+++ b/test/selmer/core_test.clj
@@ -807,7 +807,8 @@
 
 (deftest name-test
   (testing "converts keywords to strings"
-    (is (= "foobar" (render "{{foo|name}}" {:foo :foobar}))))
+    (is (= "foobar" (render "{{foo|name}}" {:foo :foobar})))
+    (is (= "foobar" (render "{{foo/bar}}" {"foo/bar" "foobar"}))))
   (testing "leaves strings as they are"
     (is (= "foobar" (render "{{foo|name}}" {:foo "foobar"})))))