diff --git a/src/taoensso/nippy.clj b/src/taoensso/nippy.clj
index cad3881..dd0c4f0 100644
--- a/src/taoensso/nippy.clj
+++ b/src/taoensso/nippy.clj
@@ -265,10 +265,11 @@
 ;;;; Dynamic config
 ;; See also `nippy.tools` ns for further dynamic config support
 
-;; TODO Switch to thread-local proxies?
+;; For back compatibility (nb Timbre's Carmine appender)
+(enc/defonce ^:dynamic *final-freeze-fallback* "DEPRECATED: prefer `*freeze-fallback`."       nil)
+(enc/defonce ^:dynamic       *freeze-fallback* "(fn [data-output x])->freeze, nil => default" nil)
 
-(enc/defonce ^:dynamic *freeze-fallback* "(fn [data-output x]), nil => default" nil)
-(enc/defonce ^:dynamic *custom-readers* "{<hash-or-byte-id> (fn [data-input])}" nil)
+(enc/defonce ^:dynamic *custom-readers* "{<hash-or-byte-id> (fn [data-input])->read}" nil)
 (enc/defonce ^:dynamic *auto-freeze-compressor*
   "(fn [byte-array])->compressor used by `(freeze <x> {:compressor :auto}),
   nil => default"
@@ -278,8 +279,6 @@
 (defn set-auto-freeze-compressor! [x] (alter-var-root #'*auto-freeze-compressor* (constantly x)))
 (defn swap-custom-readers!        [f] (alter-var-root #'*custom-readers* f))
 
-(declare ^:dynamic *final-freeze-fallback*) ; DEPRECATED
-
 ;;;; Freezing
 
 #_(do
@@ -959,10 +958,7 @@
       (try-write-serializable out x)
       (try-write-readable     out x)
 
-      ;; For back compatibility (nb Timbre's Carmine appender)
-      (when-let [fff *final-freeze-fallback*]
-        (fff out x)
-        true)
+      (when-let [fff *final-freeze-fallback*] (fff out x) true) ; Deprecated
 
       (throw-unfreezable x))))
 
@@ -1713,6 +1709,4 @@
 
 ;;;; Deprecated
 
-(enc/deprecated
-  (enc/defonce ^:dynamic *final-freeze-fallback* "DEPRECATED" nil)
-  (def freeze-fallback-as-str "DEPRECATED" write-unfreezable))
+(enc/deprecated (def freeze-fallback-as-str "DEPRECATED" write-unfreezable))
diff --git a/src/taoensso/nippy/tools.clj b/src/taoensso/nippy/tools.clj
index 18e98eb..2315f17 100644
--- a/src/taoensso/nippy/tools.clj
+++ b/src/taoensso/nippy/tools.clj
@@ -3,8 +3,6 @@
   Used by Carmine, Faraday, etc."
   (:require [taoensso.nippy :as nippy]))
 
-;; TODO Switch to thread-local proxies?
-
 (def ^:dynamic *freeze-opts* nil)
 (def ^:dynamic *thaw-opts*   nil)