diff --git a/mk/make.inc b/mk/make.inc
index 4ec981703d..b9983e2bca 100644
--- a/mk/make.inc
+++ b/mk/make.inc
@@ -17,3 +17,4 @@ LIBRARIES += AP_Param_Helper
 LIBRARIES += AP_VisualOdom
 LIBRARIES += AP_RSSI
 LIBRARIES += AP_Proximity
+LIBRARIES += AP_Gripper