diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9cdade569..b506f104d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 - Migrated the assets build pipeline from Sprockets to Webpack
 - Version check during the upgrade
 - Fix a bug: changing the date of a training session does not prevent the selection of a different type of training
+- Fix a bug: unable to change the date formats using the setup script
 - Updated summernote to 0.8.18
 - Updated angular-summernote to 0.8.1
 - Updated FontAwesome from v4 to v5
diff --git a/setup/setup.sh b/setup/setup.sh
index ce16d9174..051baf5e1 100755
--- a/setup/setup.sh
+++ b/setup/setup.sh
@@ -249,7 +249,8 @@ configure_env_file()
     read -rp "  > " value </dev/tty
     echo "======================="
     if [ "$value" != "" ]; then
-      sed -i.bak "s/$current/$variable=$value/g" "$FABMANAGER_PATH/config/env"
+      escaped=$(printf '%s\n' "$value" | sed -e 's/[\/&]/\\&/g')
+      sed -i.bak "s/$current/$variable=$escaped/g" "$FABMANAGER_PATH/config/env"
     fi
   done
   # we automatically generate the SECRET_KEY_BASE