diff --git a/libraries/RC_Channel/RC_Channel.h b/libraries/RC_Channel/RC_Channel.h
index 35978722fa..d5bcc76853 100644
--- a/libraries/RC_Channel/RC_Channel.h
+++ b/libraries/RC_Channel/RC_Channel.h
@@ -479,7 +479,7 @@ public:
 
     // returns a mask indicating which channels have overrides.  Bit 0
     // is RC channel 1.  Beware this is not a cheap call.
-    static uint16_t get_override_mask();
+    uint16_t get_override_mask() const;
 
     class RC_Channel *find_channel_for_option(const RC_Channel::aux_func_t option);
     bool duplicate_options_exist();
diff --git a/libraries/RC_Channel/RC_Channels.cpp b/libraries/RC_Channel/RC_Channels.cpp
index 7a24050881..8578904f5a 100644
--- a/libraries/RC_Channel/RC_Channels.cpp
+++ b/libraries/RC_Channel/RC_Channels.cpp
@@ -114,7 +114,7 @@ void RC_Channels::clear_overrides(void)
     // copter and plane, RC_Channels needs to control failsafes to resolve this
 }
 
-uint16_t RC_Channels::get_override_mask(void)
+uint16_t RC_Channels::get_override_mask(void) const
 {
     uint16_t ret = 0;
     RC_Channels &_rc = rc();