diff --git a/libraries/AP_Arming/AP_Arming.cpp b/libraries/AP_Arming/AP_Arming.cpp
index 265a149377..cae5eaef0b 100644
--- a/libraries/AP_Arming/AP_Arming.cpp
+++ b/libraries/AP_Arming/AP_Arming.cpp
@@ -987,11 +987,13 @@ bool AP_Arming::system_checks(bool report)
     }
 
     if (check_enabled(ARMING_CHECK_PARAMETERS)) {
+#if AP_RPM_ENABLED
         auto *rpm = AP::rpm();
         if (rpm && !rpm->arming_checks(sizeof(buffer), buffer)) {
             check_failed(ARMING_CHECK_PARAMETERS, report, "%s", buffer);
             return false;
         }
+#endif
         auto *relay = AP::relay();
         if (relay && !relay->arming_checks(sizeof(buffer), buffer)) {
             check_failed(ARMING_CHECK_PARAMETERS, report, "%s", buffer);