diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1d18435..048309f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 
 ## Upcoming
 
-- `render` now forces a deep update of all components by default, to make it more convenient to use with e.g. figwheel.
+- `render` now forces a deep update of all components, to make it more convenient to use with e.g. figwheel.
 
 - Renamed `as-component` to `as-element`, to match React's new terminology better (old name still works, though, for backward compatiblity).
 
diff --git a/src/reagent/core.cljs b/src/reagent/core.cljs
index 541d068..8163459 100644
--- a/src/reagent/core.cljs
+++ b/src/reagent/core.cljs
@@ -6,7 +6,7 @@
             [reagent.impl.util :as util]
             [reagent.impl.batching :as batch]
             [reagent.ratom :as ratom]
-            [reagent.debug :refer-macros [dbg prn]]
+            [reagent.debug :as deb :refer-macros [dbg prn]]
             [reagent.interop :refer-macros [.' .!]]))
 
 (def is-client util/is-client)
@@ -48,19 +48,13 @@ either a vector (using Reagent's Hiccup syntax), or a React element. The second
 
 Optionally takes a callback that is called when the component is in place.
 
-If the optional fourth argument is true (the default), an already mounted
-component will be forced to re-render (by bypassing the default
-shouldComponentUpdate).
-
 Returns the mounted component instance."
   ([comp container]
-   (render comp container nil true))
+   (render comp container nil))
   ([comp container callback]
-   (render comp container callback true))
-  ([comp container callback force-update]
    (let [f (fn []
              (as-element (if (fn? comp) (comp) comp)))]
-     (util/render-component f container callback force-update))))
+     (util/render-component f container callback))))
 
 (defn unmount-component-at-node
   "Remove a component from the given DOM node."
diff --git a/src/reagent/impl/util.cljs b/src/reagent/impl/util.cljs
index 21eb6b9..83d64b9 100644
--- a/src/reagent/impl/util.cljs
+++ b/src/reagent/impl/util.cljs
@@ -100,7 +100,7 @@
       (merge-style p1 (merge-class p1 (merge p1 p2))))))
 
 
-(declare ^:dynamic *always-update*)
+(def ^:dynamic *always-update* false)
 
 (defonce roots (atom {}))
 
@@ -113,9 +113,9 @@
       (do (log "Error unmounting:")
           (log e)))))
 
-(defn render-component [comp container callback force-update]
+(defn render-component [comp container callback]
   (try
-    (binding [*always-update* force-update]
+    (binding [*always-update* true]
       (.' js/React render (comp) container
           (fn []
             (binding [*always-update* false]
@@ -127,7 +127,7 @@
           (throw e)))))
 
 (defn re-render-component [comp container]
-  (render-component comp container nil true))
+  (render-component comp container nil))
 
 (defn unmount-component-at-node [container]
   (swap! roots dissoc container)