diff --git a/libraries/AP_HAL_Linux/Scheduler.cpp b/libraries/AP_HAL_Linux/Scheduler.cpp
index 078564627a..fb85f02477 100644
--- a/libraries/AP_HAL_Linux/Scheduler.cpp
+++ b/libraries/AP_HAL_Linux/Scheduler.cpp
@@ -227,7 +227,7 @@ void Scheduler::resume_timer_procs()
     _timer_semaphore.give();
 }
 
-void Scheduler::_run_timers(bool called_from_timer_thread)
+void Scheduler::_run_timers()
 {
     int i;
 
@@ -300,7 +300,7 @@ void Scheduler::_timer_task()
         }
         next_run_usec += 1000;
         // run registered timers
-        _run_timers(true);
+        _run_timers();
 
 #if HAL_LINUX_UARTS_ON_TIMER_THREAD
         /*
diff --git a/libraries/AP_HAL_Linux/Scheduler.h b/libraries/AP_HAL_Linux/Scheduler.h
index ae9e471939..4b61d7a88d 100644
--- a/libraries/AP_HAL_Linux/Scheduler.h
+++ b/libraries/AP_HAL_Linux/Scheduler.h
@@ -102,7 +102,7 @@ private:
     void _uart_task();
     void _tonealarm_task();
 
-    void _run_timers(bool called_from_timer_thread);
+    void _run_timers();
     void _run_io();
     void _run_uarts();
     bool _register_timesliced_proc(AP_HAL::MemberProc, uint8_t);