diff --git a/CHANGELOG.md b/CHANGELOG.md
index 350c05d..ec06bef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 All notable changes to this project will be documented in this file. This change log follows the conventions of [keepachangelog.com](http://keepachangelog.com/).
 
 ## [Unreleased]
+### Fixed
+- Wrapped Throwable in validate-ep-identifier with reader conditional
 
 ## 0.3.0 - 2018-07-18
 ### Fixed
diff --git a/src/sc/impl.cljc b/src/sc/impl.cljc
index 2d9df7e..bb83f90 100644
--- a/src/sc/impl.cljc
+++ b/src/sc/impl.cljc
@@ -49,7 +49,7 @@
                "ep-id should be either a positive number or a [(positive-number) (negative-number)] tuple, got: "
                (try
                  (pr-str ep-id)
-                 (catch Throwable err
+                 (catch #?(:clj Throwable :cljs :default) err
                    "(failed to print)")))
              {:sc.api.error/error-type
               :sc.api.error-types/invalid-ep-id