diff --git a/src/main/lemondronor/advisorycircular/generation.cljc b/src/main/lemondronor/advisorycircular/generation.cljc
index f7adbda..9faeca2 100644
--- a/src/main/lemondronor/advisorycircular/generation.cljc
+++ b/src/main/lemondronor/advisorycircular/generation.cljc
@@ -64,7 +64,7 @@
                (str "an " s)
                (str "a " s))
              (str "an " s)))
-   :hashtag #(string-replace % #"-" "_")})
+   :hashtag #(string/replace % #"-" "_")})
 
 
 (defn apply-filter [s filter-name]