fix geo mean test
diff --git a/test/folsom_erlang_checks.erl b/test/folsom_erlang_checks.erl
index f242d38..e84f19f 100644
--- a/test/folsom_erlang_checks.erl
+++ b/test/folsom_erlang_checks.erl
@@ -191,7 +191,14 @@
     0 = proplists:get_value(min, List),
     5000 = proplists:get_value(max, List),
     869.6363636363636 = proplists:get_value(arithmetic_mean, List),
-    100.17443147308997 = proplists:get_value(geometric_mean, List),
+
+    GeoMean = proplists:get_value(geometric_mean, List),
+    ok = case GeoMean - 100.17443147308997 of
+             GeoDiff when GeoDiff <  0.00000001 ->
+                 ok;
+             _ ->
+                 error
+         end,
 
     Value = proplists:get_value(harmonic_mean, List),
     %?debugFmt("~p~n", [Value]),