diff --git a/src/adapter.c b/src/adapter.c
index 08296bd..596e1eb 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -405,6 +405,7 @@ static void store_adapter_info(struct btd_adapter *adapter)
 static void trigger_pairable_timeout(struct btd_adapter *adapter);
 static void adapter_start(struct btd_adapter *adapter);
 static void adapter_stop(struct btd_adapter *adapter);
+static void trigger_passive_scanning(struct btd_adapter *adapter);
 
 static void settings_changed(struct btd_adapter *adapter, uint32_t settings)
 {
@@ -434,6 +435,12 @@ static void settings_changed(struct btd_adapter *adapter, uint32_t settings)
 		}
 	}
 
+	if (changed_mask & MGMT_SETTING_LE) {
+		if ((adapter->current_settings & MGMT_SETTING_POWERED) &&
+				(adapter->current_settings & MGMT_SETTING_LE))
+			trigger_passive_scanning(adapter);
+	}
+
 	if (changed_mask & MGMT_SETTING_CONNECTABLE)
 		g_dbus_emit_property_changed(dbus_conn, adapter->path,
 					ADAPTER_INTERFACE, "Connectable");