diff --git a/variants/lilygo_tlora_v2_1/LilyGoTLoraBoard.h b/variants/lilygo_tlora_v2_1/LilyGoTLoraBoard.h
index 545219b2..f126f006 100644
--- a/variants/lilygo_tlora_v2_1/LilyGoTLoraBoard.h
+++ b/variants/lilygo_tlora_v2_1/LilyGoTLoraBoard.h
@@ -21,4 +21,8 @@ public:
 
     return (2 * raw);
   }
+
+  uint32_t getIRQGpio() override {
+    return P_LORA_DIO_0; // default for SX1276
+  }
 };
\ No newline at end of file