diff --git a/slf4j/src/taoensso/telemere/slf4j.clj b/slf4j/src/taoensso/telemere/slf4j.clj
index f156ab8..f14c81e 100644
--- a/slf4j/src/taoensso/telemere/slf4j.clj
+++ b/slf4j/src/taoensso/telemere/slf4j.clj
@@ -123,7 +123,7 @@
      :inst   inst
      :error  error
 
-     :ctx
+     :ctx+
      (when-let [hmap (org.slf4j.MDC/getCopyOfContextMap)]
        (clojure.lang.PersistentHashMap/create hmap))