diff --git a/include/serial_ports.h b/include/serial_ports.h
index 1fc2b83..57b09b6 100644
--- a/include/serial_ports.h
+++ b/include/serial_ports.h
@@ -79,7 +79,6 @@
 // ============================================================================
 #if DEBUG_SERIAL_INDEX >= 0 && (DEBUG_SERIAL_INDEX == 0 || DEBUG_SERIAL_INDEX == 1)
     #define DEBUG_SERIAL debugSerial
-    #define DEBUG_SERIAL_OBJ debugSerial
 #else
     // Debug disabled - create dummy defines that do nothing
     #define DEBUG_SERIAL Serial  // Won't be used, but prevents compilation errors