diff --git a/srcpkgs/telepathy-qt/template b/srcpkgs/telepathy-qt/template
index 6754a3455ca..b5201814e28 100644
--- a/srcpkgs/telepathy-qt/template
+++ b/srcpkgs/telepathy-qt/template
@@ -13,6 +13,8 @@ homepage="http://telepathy.freedesktop.org/"
 distfiles="http://telepathy.freedesktop.org/releases/${pkgname}/${pkgname}-${version}.tar.gz"
 checksum=496eb4951ea9b181d7d68a2122a885474c4f73b519319496aa1b97d9b361a1f8
 
+CXXFLAGS="-D_DEFAULT_SOURCE"
+
 subpackages="telepathy-qt-farstream telepathy-qt-devel"
 
 telepathy-qt-farstream_package() {