diff --git a/autostart_mobile_measurement.sh b/autostart_mobile_measurement.sh
old mode 100644
new mode 100755
index 57748c4..ace109e
--- a/autostart_mobile_measurement.sh
+++ b/autostart_mobile_measurement.sh
@@ -4,8 +4,8 @@ FOLDER="/home/prause/measurement-scripts/"
 NEW_DIR=$(DATE=$(date +%F-%T))
 
 export PIPENV_VENV_IN_PROJECT=1
-mkdir "$FOLDER$NEW_DIR"
-cd "$FOLDER$NEW_DIR"
+mkdir "${FOLDER}/${NEW_DIR}"
+cd "${FOLDER}/${NEW_DIR}"
 pipenv run pipenv run ./measurement_main.py -c 130.75.73.69 \
  --bandwidth \
  --set time=30 \