diff --git a/ArduCopter/Copter.h b/ArduCopter/Copter.h
index 2584ad890c..11dc89d156 100644
--- a/ArduCopter/Copter.h
+++ b/ArduCopter/Copter.h
@@ -873,7 +873,7 @@ private:
     bool loiter_init(bool ignore_checks);
     void loiter_run();
 #if PRECISION_LANDING == ENABLED
-    bool do_precision_loiter() const;
+    bool do_precision_loiter();
     void precision_loiter_xy();
     void set_precision_loiter_enabled(bool value) { _precision_loiter_enabled = value; }
     bool _precision_loiter_enabled;
diff --git a/ArduCopter/control_loiter.cpp b/ArduCopter/control_loiter.cpp
index 4e8eb9d159..e4f4225223 100644
--- a/ArduCopter/control_loiter.cpp
+++ b/ArduCopter/control_loiter.cpp
@@ -36,7 +36,7 @@ bool Copter::loiter_init(bool ignore_checks)
 }
 
 #if PRECISION_LANDING == ENABLED
-bool Copter::do_precision_loiter() const
+bool Copter::do_precision_loiter()
 {
     if (!_precision_loiter_enabled) {
         return false;