diff --git a/src/propeller/problems/PSB1/small_or_large.cljc b/src/propeller/problems/PSB1/small_or_large.cljc
index bfc0dce..e258379 100644
--- a/src/propeller/problems/PSB1/small_or_large.cljc
+++ b/src/propeller/problems/PSB1/small_or_large.cljc
@@ -57,7 +57,9 @@
 
 
 (defn -main
-  "Runs propel-gp, giving it a map of arguments."
+  "Runs the top-level genetic programming function, giving it a map of 
+  arguments with defaults that can be overridden from the command line
+  or through a passed map."
   [& args]
   (gp/gp
     (merge