diff --git a/h2o-docs/src/booklets/v2_2015/source/GBM_Vignette_code_examples/gbm_gridsearch_random.py b/h2o-docs/src/booklets/v2_2015/source/GBM_Vignette_code_examples/gbm_gridsearch_random.py
index <HASH>..<HASH> 100644
--- a/h2o-docs/src/booklets/v2_2015/source/GBM_Vignette_code_examples/gbm_gridsearch_random.py
+++ b/h2o-docs/src/booklets/v2_2015/source/GBM_Vignette_code_examples/gbm_gridsearch_random.py
@@ -1,6 +1,6 @@
 #Define parameters for gridsearch
 ntrees_opt = range(0,100,1)
-max_depth_opt = range(0,20,1)
+max_depth_opt = range(1,20,1)
 learn_rate_opt = [s/float(1000) for s in range(1,101)]
 hyper_parameters = {"ntrees": ntrees_opt, 
     "max_depth":max_depth_opt, "learn_rate":learn_rate_opt}
prevent possibility for random gbm search to select max_depth=0 (#<I>)