diff --git a/project.clj b/project.clj
index 58d3673..25e8878 100644
--- a/project.clj
+++ b/project.clj
@@ -5,7 +5,7 @@
             :url "http://www.eclipse.org/legal/epl-v10.html"}
 
   :dependencies [[org.clojure/test.check "0.9.0"]
-                 [prismatic/schema "1.1.11"]]
+                 [prismatic/schema "1.2.1"]]
 
   :profiles {:dev {:dependencies [[org.clojure/clojure "1.8.0"]
                                   [org.clojure/clojurescript "1.10.520"]]
diff --git a/src/schema_generators/generators.cljc b/src/schema_generators/generators.cljc
index e85710c..10f136b 100644
--- a/src/schema_generators/generators.cljc
+++ b/src/schema_generators/generators.cljc
@@ -78,7 +78,7 @@
   (composite-generator [s params]
     (generators/such-that
      (complement (.-pre ^schema.spec.collection.CollectionSpec s))
-     (generators/fmap (:constructor s) (elements-generator (:elements s) params))))
+     (generators/fmap (:konstructor s) (elements-generator (:elements s) params))))
 
   schema.spec.leaf.LeafSpec
   (composite-generator [s params]