diff --git a/src/fonda/step.cljs b/src/fonda/step.cljs
index 18fcf2d..2541057 100644
--- a/src/fonda/step.cljs
+++ b/src/fonda/step.cljs
@@ -53,13 +53,13 @@
     fn-or-keyword))
 
 (defn step->record
-  [{:keys [tap inject] :as step}]
+  [{:keys [tap inject fn processor] :as step}]
   (let [step
         (cond
           tap (map->Tap (update step :tap resolve-function))
-          (:fn step) (map->Processor (-> step
-                                         (update :fn resolve-function)
-                                         (assoc :is-anomaly-error? (or (:is-anomaly-error? step) (constantly true)))))
+          (or processor fn) (map->Processor (-> step
+                                                (update :fn resolve-function)
+                                                (assoc :is-anomaly-error? (or (:is-anomaly-error? step) (constantly true)))))
           inject (map->Injector (update step :inject resolve-function)))]
     (update step :name keyword)))