diff --git a/ros_arduino_firmware/src/libraries/ROSArduinoBridge/encoder_driver.ino b/ros_arduino_firmware/src/libraries/ROSArduinoBridge/encoder_driver.ino
index 294cdb3..e1792bb 100644
--- a/ros_arduino_firmware/src/libraries/ROSArduinoBridge/encoder_driver.ino
+++ b/ros_arduino_firmware/src/libraries/ROSArduinoBridge/encoder_driver.ino
@@ -9,7 +9,7 @@
    
 #ifdef USE_BASE
 
-#if defined ROBOGAIA
+#ifdef ROBOGAIA
   /* The Robogaia Mega Encoder shield */
   #include "MegaEncoderCounter.h"