diff --git a/test/random_test.cc b/test/random_test.cc
--- a/test/random_test.cc
+++ b/test/random_test.cc
@@ -33,4 +33,5 @@
   a=lemon::rnd.gamma(4);
   //Does gamma work with integer k?
   a=lemon::rnd.gamma(4.0,0);
+  a=lemon::rnd.poisson(.5);
 }