diff --git a/lorawan.cpp b/lorawan.cpp
index c8d641fd7c0955ebd7100626d2e06f9d4f0221cf..1840727aaba197ec3c01b2e868f5856f7c047dfd 100644
--- a/lorawan.cpp
+++ b/lorawan.cpp
@@ -36,13 +36,7 @@ namespace lorawan {
   String last_transmission = "";
 
   void initialize() {
-    Serial.print(F("Starting LoRaWAN. "));
-
-#if CFG_LMIC_EU_like
-    Serial.println("Region : EU.");
-#else
-    Serial.println("Region : US.");
-#endif
+    Serial.println(F("Starting LoRaWAN. Frequency plan : " LMIC_FREQUENCY_PLAN " MHz."));
 
     // More info about pin mapping : https://github.com/mcci-catena/arduino-lmic#pin-mapping
     // Has been tested successfully with ESP32 TTGO LoRa32 V1, and might work with other ESP32+LoRa boards.
diff --git a/lorawan.h b/lorawan.h
index 27bb21f0ca5e137f550a413ec641d1fb94b53885..8296260c068bb878f11f19c36bfe7d4e315b9244 100644
--- a/lorawan.h
+++ b/lorawan.h
@@ -19,6 +19,22 @@ namespace config {
   extern uint16_t lorawan_sending_interval; // [s]
 }
 
+#if defined(CFG_eu868)
+#  define LMIC_FREQUENCY_PLAN "Europe 868"
+#elif defined(CFG_us915)
+#  define LMIC_FREQUENCY_PLAN "US 915"
+#elif defined(CFG_au915)
+#  define LMIC_FREQUENCY_PLAN "Australia 915"
+#elif defined(CFG_as923)
+#  define LMIC_FREQUENCY_PLAN "Asia 923"
+#elif defined(CFG_kr920)
+#  define LMIC_FREQUENCY_PLAN "Korea 920"
+#elif defined(CFG_in866)
+#  define LMIC_FREQUENCY_PLAN "India 866"
+#else
+#  error "Region should be specified"
+#endif
+
 namespace lorawan {
   extern bool waiting_for_confirmation;
   extern bool connected;