diff --git a/openvidu-recording-java/src/test/resources/run-composite-test.sh b/openvidu-recording-java/src/test/resources/run-composite-test.sh
index 1aa22eda..71d8f129 100755
--- a/openvidu-recording-java/src/test/resources/run-composite-test.sh
+++ b/openvidu-recording-java/src/test/resources/run-composite-test.sh
@@ -16,21 +16,36 @@ CURRENT_PATH=$PWD
 rm -rf openvidu
 rm -rf openvidu-tutorials
 
+
 ### Init KMS as local user
 sudo service kurento-media-server restart
 
+
 ### Clone projects
 git clone https://github.com/OpenVidu/openvidu-tutorials.git || exit 1
 git clone https://github.com/OpenVidu/openvidu.git || exit 1
 
+
 ### Launch openvidu-server
 cd $CURRENT_PATH/openvidu
 mvn -DskipTests=true clean -DskipTests=true compile -DskipTests=true install || exit 1
 cd $CURRENT_PATH/openvidu/openvidu-server
+
+if nc -z localhost 4443; then
+  echo "ERROR launching openvidu-server. Port 4443 is already occupied. Kill all processes listed by 'ps -ef | grep openvidu'"
+  exit 1
+fi
+
 mvn package -Dopenvidu.recording=true -Dopenvidu.recording.path=$CURRENT_PATH/recordings exec:java &> $CURRENT_PATH/openvidu-server.log &
 
+
 ### Launch openvidu-recording-java app
 cd $CURRENT_PATH/openvidu-tutorials/openvidu-recording-java
+
+if nc -z localhost 5000; then
+  echo "ERROR launching openvidu-recording-java. Port 5000 is already occupied. Kill all processes listed by 'ps -ef | grep openvidu'"
+fi
+
 mvn package -DskipTests=true exec:java &> $CURRENT_PATH/openvidu-recording-java.log &
 
 echo "Waiting openvidu-recording-java app to launch on 5000"
@@ -47,5 +62,6 @@ while ! nc -z localhost 4443; do
 done
 echo "openvidu-server ready"
 
+
 ### Launch e2e test
 mvn -Dtest=AppTestE2e -DAPP_URL=https://localhost:5000/ -DOPENVIDU_URL=https://localhost:4443/ -DOPENVIDU_SECRET=MY_SECRET -DNUMBER_OF_ATTEMPTS=30 -DRECORDING_DURATION=5 -DDURATION_THRESHOLD=5 -DRECORDING_PATH=$CURRENT_PATH/recordings test