diff --git a/frontend/src/app/util/strings.cljs b/frontend/src/app/util/strings.cljs
index 0eb5f74c8..3f74c9e6c 100644
--- a/frontend/src/app/util/strings.cljs
+++ b/frontend/src/app/util/strings.cljs
@@ -46,4 +46,5 @@
 (defn camelize
   [str]
   ;; str.replace(":", "-").replace(/-./g, x=>x[1].toUpperCase())
-  (js* "~{}.replace(\":\", \"-\").replace(/-./g, x=>x[1].toUpperCase())", str))
+  (when (not (nil? str))
+    (js* "~{}.replace(\":\", \"-\").replace(/-./g, x=>x[1].toUpperCase())", str)))