diff --git a/launch.sh b/launch.sh
index 65abfda..2f3d90d 100755
--- a/launch.sh
+++ b/launch.sh
@@ -152,7 +152,7 @@ test_postgresql_exists() {
 
 test_postgresql_launched() {
   PSQL_RUNNING=$($docker_cmd inspect --format="{{ .State.Running }}" ${POSTGRES_DOCKER_NAME} 2> /dev/null)
-  if test $PSQL_RUNNING == "false"; then
+  if test "$PSQL_RUNNING" == "false"; then
     return 1
   fi
   return 0
@@ -204,7 +204,7 @@ test_export() {
   fi
 }
 
-export() {
+export_command() {
   # Check all variables are availables
   test_create
   # Then check some specific things for dump method
@@ -222,7 +222,7 @@ init() {
     info "Python virtual environment initialized."
   fi
   cd $PROJECT_DIR
-  # On Fedora 23: postgresql-libs python3-devel python-virtualenv git-core python3-pip
+  # On Fedora 23: gcc postgresql-devel python3-devel python-virtualenv git-core python3-pip redhat-rpm-config gmp-devel
   sudo apt-get install -qq libpq-dev python3-dev python-virtualenv git-core python3-pip || error_and_quit "Dependancies installation failed."
   info "Dependancies via apt-get checked/installed."
   if ! test -d "$GISSMO_DIR/.git/"; then
@@ -362,7 +362,13 @@ fi
 
 if ! test -z $COMMAND; then
   check_command "$COMMAND"
-  $COMMAND
+  # To avoid 'export' bash command reassignement which made some failure in
+  #+ Python virtualenv
+  if "$COMMAND" == "export"; then
+    export_command
+  else
+    $COMMAND
+  fi
 else
   show_help
 fi