diff --git a/libraries/AP_HAL_Empty/Semaphores.h b/libraries/AP_HAL_Empty/Semaphores.h
index c2f8618a22..230ee9cfc0 100644
--- a/libraries/AP_HAL_Empty/Semaphores.h
+++ b/libraries/AP_HAL_Empty/Semaphores.h
@@ -4,7 +4,7 @@
 
 class Empty::Semaphore : public AP_HAL::Semaphore {
 public:
-    Semaphore() : _taken(false) {}
+
     bool give() override;
     bool take(uint32_t timeout_ms) override;
     bool take_nonblocking() override;