diff --git a/docker/PYROS_DOCKER_UPDATE b/docker/PYROS_DOCKER_UPDATE
index 2c0b9cd..b297d4f 100755
--- a/docker/PYROS_DOCKER_UPDATE
+++ b/docker/PYROS_DOCKER_UPDATE
@@ -14,6 +14,14 @@ fi
 echo "Updating Guitastro source code"
 cd ../vendor/guitastro/
 gitpull_output=$(git pull 2>&1)
+already_uptodate="Déjà à jour."
+if [ $? -eq 1 ]; then
+    if [[ "$gitpull_output"!="$already_uptodate" ]]; then
+        echo "Git pull failed. Error message is:"
+        echo $gitpull_output
+        exit 1
+    fi
+fi
 echo $gitpull_output
 check_files=("docker-compose.yml" "Dockerfile" "install/requirements.in")
 for file in "${check_files[@]}"
@@ -28,6 +36,13 @@ done
 cd $root_folder
 echo "Updating PyROS source code"
 gitpull_output=$(git pull 2>&1)
+if [ $? -eq 1 ]; then
+    if [[ "$gitpull_output"!="$already_uptodate" ]]; then
+        echo "Git pull failed. Error message is:"
+        echo $gitpull_output
+        exit 1
+    fi
+fi
 echo $gitpull_output
 check_files=("docker-compose.yml" "Dockerfile" "install/requirements.in")
 for file in "${check_files[@]}"
--
libgit2 0.21.2