diff --git a/libraries/AP_Arming/AP_Arming.cpp b/libraries/AP_Arming/AP_Arming.cpp
index af7dc98d1e..a09f0e4be7 100644
--- a/libraries/AP_Arming/AP_Arming.cpp
+++ b/libraries/AP_Arming/AP_Arming.cpp
@@ -797,7 +797,7 @@ bool AP_Arming::servo_checks(bool report) const
     bool check_passed = true;
     for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
         const SRV_Channel *c = SRV_Channels::srv_channel(i);
-        if (c == nullptr || c->get_function() == SRV_Channel::k_none) {
+        if (c == nullptr || c->get_function() <= SRV_Channel::k_none) {
             continue;
         }