diff --git a/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/core.cljc b/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/core.cljc
index e537fd4..d725f0c 100644
--- a/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/core.cljc
+++ b/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/core.cljc
@@ -5,6 +5,8 @@
             [org.domaindrivenarchitecture.activity-pub-poc.spec-helper :as sh]
             [clojure.data.json :as json]))
 
+(declare normalize-functional-property)
+
 (defn normalize-value [v]
   (cond (map? v)
         (walk/walk normalize-functional-property identity v)
@@ -12,6 +14,7 @@
         (map normalize-value v)
         :else v))
 
+; TODO: Consider using tail recursion in case of prod usage
 (defn normalize-functional-property [elem]
  (let [k (first elem)
        v (second elem)]