diff --git a/firmware/hw_layer/openblt/efi_blt_ids.h b/firmware/hw_layer/openblt/efi_blt_ids.h
index cd34eb352b..1450be3f5c 100644
--- a/firmware/hw_layer/openblt/efi_blt_ids.h
+++ b/firmware/hw_layer/openblt/efi_blt_ids.h
@@ -18,3 +18,7 @@
 /** \brief Configure CAN message ID target->host. */
 #define BOOT_COM_CAN_TX_MSG_ID          (0x107E1 | 0x80000000)
 #endif
+
+#ifndef BOOT_COM_CAN_EXT
+#define BOOT_COM_CAN_EXT true
+#endif
diff --git a/misc/libopenblt_jni/openblt_jni.cpp b/misc/libopenblt_jni/openblt_jni.cpp
index cc00be134b..34dbe44f92 100644
--- a/misc/libopenblt_jni/openblt_jni.cpp
+++ b/misc/libopenblt_jni/openblt_jni.cpp
@@ -131,7 +131,7 @@ static bool setupCan(JNIEnv* env, jobject jCallbacks) {
   canSettings.baudrate = BOOT_COM_CAN_BAUDRATE;
   canSettings.transmitId = BOOT_COM_CAN_RX_MSG_ID;
   canSettings.receiveId = BOOT_COM_CAN_TX_MSG_ID;
-  canSettings.useExtended = false;
+  canSettings.useExtended = BOOT_COM_CAN_EXT;
 
   BltSessionInit(BLT_SESSION_XCP_V10, &xcpSettings, BLT_TRANSPORT_XCP_V10_USB, &canSettings);