diff --git a/plugins/sip/calls-sip-provider.c b/plugins/sip/calls-sip-provider.c
index 473530a..096c164 100644
--- a/plugins/sip/calls-sip-provider.c
+++ b/plugins/sip/calls-sip-provider.c
@@ -363,6 +363,8 @@ add_account (CallsAccountProvider *acc_provider,
 
   self = CALLS_SIP_PROVIDER (acc_provider);
 
+  g_object_ref (acc_provider);
+
   return !!calls_sip_provider_add_origin (self, credentials, 0, FALSE);
 }
 
@@ -391,6 +393,8 @@ remove_account (CallsAccountProvider *acc_provider,
   g_hash_table_remove (self->credentials, credentials);
   g_list_store_remove (self->origins, position);
 
+  g_object_unref (acc_provider);
+
   return TRUE;
 }