diff --git a/src/lib/hysteresis/hysteresis.cpp b/src/lib/hysteresis/hysteresis.cpp
index 22593b2d6e..3cadc7b7ea 100644
--- a/src/lib/hysteresis/hysteresis.cpp
+++ b/src/lib/hysteresis/hysteresis.cpp
@@ -42,8 +42,12 @@
 namespace systemlib
 {
 
-void
-Hysteresis::set_hysteresis_time_from(const bool from_state, const hrt_abstime new_hysteresis_time_us)
+Hysteresis::Hysteresis(bool initial_state)
+{
+	_state = _requested_state = initial_state;
+}
+
+void Hysteresis::set_hysteresis_time_from(const bool from_state, const hrt_abstime new_hysteresis_time_us)
 {
 	if (from_state) {
 		_time_from_true_us = new_hysteresis_time_us;
@@ -53,8 +57,7 @@ Hysteresis::set_hysteresis_time_from(const bool from_state, const hrt_abstime ne
 	}
 }
 
-void
-Hysteresis::set_state_and_update(const bool new_state, const hrt_abstime &now_us)
+void Hysteresis::set_state_and_update(const bool new_state, const hrt_abstime &now_us)
 {
 	if (new_state != _state) {
 		if (new_state != _requested_state) {
@@ -69,8 +72,7 @@ Hysteresis::set_state_and_update(const bool new_state, const hrt_abstime &now_us
 	update(now_us);
 }
 
-void
-Hysteresis::update(const hrt_abstime &now_us)
+void Hysteresis::update(const hrt_abstime &now_us)
 {
 	if (_requested_state != _state) {
 
diff --git a/src/lib/hysteresis/hysteresis.h b/src/lib/hysteresis/hysteresis.h
index 9c16ce4933..850d204825 100644
--- a/src/lib/hysteresis/hysteresis.h
+++ b/src/lib/hysteresis/hysteresis.h
@@ -49,12 +49,8 @@ namespace systemlib
 class Hysteresis
 {
 public:
-	explicit Hysteresis(bool init_state) :
-		_state(init_state),
-		_requested_state(init_state)
-	{}
-	Hysteresis() = delete; // no default constructor
-
+	Hysteresis() = default;
+	explicit Hysteresis(bool initial_state);
 	~Hysteresis() = default;
 
 	bool get_state() const { return _state; }
@@ -67,13 +63,13 @@ public:
 
 private:
 
-	hrt_abstime _last_time_to_change_state{0};
+	hrt_abstime _last_time_to_change_state = 0;
 
-	hrt_abstime _time_from_true_us{0};
-	hrt_abstime _time_from_false_us{0};
+	hrt_abstime _time_from_true_us = 0;
+	hrt_abstime _time_from_false_us = 0;
 
-	bool _state;
-	bool _requested_state;
+	bool _state = false;
+	bool _requested_state = false;
 };
 
 } // namespace systemlib