--- contrib/scripts/sip_to_pjsip/sip_to_pjsip.py	(Asterisk 13.10.0)
+++ contrib/scripts/sip_to_pjsip/sip_to_pjsip.py	(working copy)
@@ -984,3 +1011,2 @@
-            if hasattr(self, 'authuser'):
-                set_value('username', self.authuser or self.user, auth_section,
-                          pjsip, nmapped, 'auth')
+            set_value('username', self.authuser if hasattr(self, 'authuser')
+                      else self.user, auth_section, pjsip, nmapped, 'auth')