diff --git a/launch.sh b/launch.sh
index 34b7f85..65abfda 100755
--- a/launch.sh
+++ b/launch.sh
@@ -222,12 +222,13 @@ init() {
     info "Python virtual environment initialized."
   fi
   cd $PROJECT_DIR
+  # On Fedora 23: postgresql-libs python3-devel python-virtualenv git-core python3-pip
   sudo apt-get install -qq libpq-dev python3-dev python-virtualenv git-core python3-pip || error_and_quit "Dependancies installation failed."
   info "Dependancies via apt-get checked/installed."
   if ! test -d "$GISSMO_DIR/.git/"; then
     git clone -q -b "$GIT_BRANCH" "$GIT_URL" "$GISSMO_DIR" || error_and_quit "Fetch Git repository failed."
   else
-    GIT_WORK_TREE="${GISSMO_DIR}/" GIT_DIR="${GISSMO_DIR}/.git/" git pull -q origin master || error_and_quit "Pull command on Git repository failed."
+    GIT_WORK_TREE="${GISSMO_DIR}/" GIT_DIR="${GISSMO_DIR}/.git/" git pull -q origin ${GIT_BRANCH} || error_and_quit "Pull command on Git repository failed."
   fi
   info "Git repository state checked."
   # install pre-commit hook that check code validity and more