diff --git a/src/training/tesstrain.sh b/src/training/tesstrain.sh
index f0f4ba2341..6aa04626ff 100755
--- a/src/training/tesstrain.sh
+++ b/src/training/tesstrain.sh
@@ -47,7 +47,7 @@ echo -e "USAGE: tesstrain.sh
 }
 
 source "$(dirname $0)/tesstrain_utils.sh"
-if [[ "$1" == "--help" || "$1" == "-h" ]]; then
+if [[ $# -eq 0 || "$1" == "--help" || "$1" == "-h" ]]; then
     display_usage
     exit 0
 fi
diff --git a/src/training/tesstrain_utils.sh b/src/training/tesstrain_utils.sh
index 426453d4f5..220688dd36 100644
--- a/src/training/tesstrain_utils.sh
+++ b/src/training/tesstrain_utils.sh
@@ -16,6 +16,13 @@
 #
 # USAGE: source tesstrain_utils.sh
 
+if [ -n "$BASH_VERSION" ];then
+  set -u  # comment in case of "unbound variable" error or fix the code
+  set -eo pipefail;
+else
+   echo "Warning: you aren't running script in bash - expect problems..."
+ fi
+
 UNAME=$(uname -s | tr 'A-Z' 'a-z')
 LANG_CODE="ENG"
 TIMESTAMP=`date +%Y-%m-%d`