--- configure.ac	(Asterisk 16.10.0)
+++ configure.ac	(working copy)
@@ -454,2 +454,6 @@
 
+if test "${with_pjproject}" == "no" || test "${with_pjproject}" == "n" ; then
+	PJPROJECT_BUNDLED=no
+fi
+
 THIRD_PARTY_CONFIGURE()