diff --git a/travis-doxygen.sh b/travis-doxygen.sh
index 1023108..e9eb6b9 100755
--- a/travis-doxygen.sh
+++ b/travis-doxygen.sh
@@ -66,7 +66,7 @@ gh_pages_prepare()
 	[ ! -d "html" ] || \
 		abort "Doxygen target directory already exists."
 	git --version
-	git clone --single-branch -b gh-pages "${GITHUB_CLONE}" html
+	git clone -b gh-pages "${GITHUB_CLONE}" html
 	cd html
 	# setup git config (with defaults)
 	git config user.name "${GIT_NAME-travis}"