diff --git a/modules/reitit-core/src/reitit/impl.cljc b/modules/reitit-core/src/reitit/impl.cljc
index 962744ab..2d202829 100644
--- a/modules/reitit-core/src/reitit/impl.cljc
+++ b/modules/reitit-core/src/reitit/impl.cljc
@@ -25,7 +25,7 @@
   [f coll]
   (reduce-kv
     (fn [coll k v]
-      (if-let [v' (f v)]
+      (if-some [v' (f v)]
         (assoc coll k v')
         coll))
     coll