diff --git a/pkgs/tools/networking/network-manager/fortisslvpn/default.nix b/pkgs/tools/networking/network-manager/fortisslvpn/default.nix
index 11b29081f9bb..16964e4db945 100644
--- a/pkgs/tools/networking/network-manager/fortisslvpn/default.nix
+++ b/pkgs/tools/networking/network-manager/fortisslvpn/default.nix
@@ -25,6 +25,7 @@ in stdenv.mkDerivation rec {
   nativeBuildInputs = [ intltool pkgconfig ];
 
   configureFlags = [
+    "--without-libnm-glib"
     "--with-gnome=${if withGnome then "yes" else "no"}"
     "--localstatedir=/tmp"
   ];