diff --git a/lasso/id-ff/profile.c b/lasso/id-ff/profile.c
index 67696716..ad011499 100644
--- a/lasso/id-ff/profile.c
+++ b/lasso/id-ff/profile.c
@@ -275,7 +275,7 @@ lasso_profile_is_identity_dirty(LassoProfile *profile)
 gboolean
 lasso_profile_is_session_dirty(LassoProfile *profile)
 {
-	return lasso_session_is_dirty(profile->session);
+	return LASSO_IS_SESSION(profile->session) && lasso_session_is_dirty(profile->session);
 }