diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 59acc15d8e48b0cc2304570ad1edc000fc610190..04fc62ffed25c2812f5be6e69318b18ac6c3934e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -140,8 +140,20 @@ stages:
   - catkin_make
   - roscd wolf_demo_gnss_imu/bag
   - wget https://gitlab.iri.upc.edu/mobile_robotics/wolf_projects/wolf_ros/demos/demo_rosbags/-/raw/master/gnss_imu/M600b_1.bag
-  - roslaunch wolf_demo_gnss_imu demo_gnss_imu.launch rviz:=false bag:=M600b_1
-  - roslaunch wolf_demo_gnss_imu demo_gnss_imu.launch rviz:=false bag:=M600b_1 only_gnss:=true
+  - roslaunch wolf_demo_gnss_imu demo_gnss_imu.launch rviz:=false bag:=M600b_1 2> roslaunch_error_messages.log
+  - cat roslaunch_error_messages.log
+  - if [[ "$(cat roslaunch_error_messages.log)" == *"process has finished cleanly"* ]]; then
+  -   echo "============= ROSLAUNCH FINISHED WITHOUT ANY PROBLEM! =================";
+  - else
+  -   exit 1
+  - fi
+  - roslaunch wolf_demo_gnss_imu demo_gnss_imu.launch rviz:=false bag:=M600b_1 only_gnss:=true 2> roslaunch_error_messages2.log
+  - cat roslaunch_error_messages2.log
+  - if [[ "$(cat roslaunch_error_messages2.log)" == *"process has finished cleanly"* ]]; then
+  -   echo "============= ROSLAUNCH FINISHED WITHOUT ANY PROBLEM! =================";
+  - else
+  -   exit 1
+  - fi
 
 ############ UBUNTU 16.04 TEST ############
 demo:xenial: