diff --git a/sonoff/xdrv_25_A4988_Stepper.ino b/sonoff/xdrv_25_A4988_Stepper.ino
index f80cc1a81..99bcde51b 100644
--- a/sonoff/xdrv_25_A4988_Stepper.ino
+++ b/sonoff/xdrv_25_A4988_Stepper.ino
@@ -18,7 +18,7 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifdef USE_A4988_Stepper
+#ifdef USE_A4988_STEPPER
 #include <A4988_Stepper.h>
 #define XDRV_25                    25