diff --git a/src/config.py b/src/config.py
index 418bfd57f..7d9a09e18 100644
--- a/src/config.py
+++ b/src/config.py
@@ -1588,7 +1588,8 @@ class ServiceRegistrationWindow:
 			table.attach(label, 0, 1, nbrow - 1, nbrow, 0, 0, 0, 0)
 			entry = gtk.Entry()
 			entry.set_activates_default(True)
-			entry.set_text(self.infos[name])
+			if self.infos[name]:
+				entry.set_text(self.infos[name])
 			if name == 'password':
 				entry.set_visibility(False)
 			table.attach(entry, 1, 2, nbrow - 1, nbrow, 0, 0, 0, 0)