diff --git a/project.clj b/project.clj
index c0ec501..174c998 100644
--- a/project.clj
+++ b/project.clj
@@ -6,7 +6,7 @@
   :dependencies [[org.clojure/clojure "1.10.0"]
                  [org.clojure/clojurescript "1.9.946"]
                  [org.clojure/test.check "1.1.0"]
-                 [net.clojars.schneau/psb2 "1.1.0"]]
+                 [net.clojars.schneau/psb2 "1.1.1"]]
   :profiles {:profiling {:dependencies [[com.clojure-goes-fast/clj-async-profiler "0.5.1"]]}}
   :main ^:skip-aot propeller.core
   :repl-options {:init-ns propeller.core}
diff --git a/src/propeller/problems/simple_classification.cljc b/src/propeller/problems/simple_classification.cljc
index 643591f..e8d6756 100644
--- a/src/propeller/problems/simple_classification.cljc
+++ b/src/propeller/problems/simple_classification.cljc
@@ -49,7 +49,7 @@
   "Finds the behaviors and errors of an individual: Error is 0 if the value and
   the program's selected behavior match, or 1 if they differ, or 1000000 if no
   behavior is produced. The behavior is here defined as the final top item on
-  the INTEGER stack."
+  the BOOLEAN stack."
   [argmap data individual]
   (let [program (genome/plushy->push (:plushy individual) argmap)
         inputs (map (fn [x] (first (:input1 x))) data)
@@ -85,7 +85,6 @@
        :error-function          error-function
        :training-data           (:train train-and-test-data)
        :testing-data            (:test train-and-test-data)
-       :case-t-size             (count (:train train-and-test-data))
        :max-generations         500
        :population-size         500
        :max-initial-plushy-size 100