diff --git a/libraries/AP_Gripper/AP_Gripper.cpp b/libraries/AP_Gripper/AP_Gripper.cpp
index 16fa0d247e..bd4e3e3535 100644
--- a/libraries/AP_Gripper/AP_Gripper.cpp
+++ b/libraries/AP_Gripper/AP_Gripper.cpp
@@ -55,7 +55,7 @@ const AP_Param::GroupInfo AP_Gripper::var_info[] = {
     // @Description: Time in seconds that gripper will regrab the cargo to ensure grip has not weakened; 0 to disable
     // @User: Advanced
     // @Range: 0 255
-    // @Units: seconds
+    // @Units: s
     AP_GROUPINFO("REGRAB",  5, AP_Gripper, config.regrab_interval, GRIPPER_REGRAB_DEFAULT),
 
     // @Param: UAVCAN_ID