diff --git a/src/g_shared/a_sectoraction.cpp b/src/g_shared/a_sectoraction.cpp
index 5c180cc47..6cc285afa 100644
--- a/src/g_shared/a_sectoraction.cpp
+++ b/src/g_shared/a_sectoraction.cpp
@@ -39,12 +39,9 @@
 
 IMPLEMENT_CLASS(ASectorAction, false, false)
 
-ASectorAction::ASectorAction (bool activatedByUse) :
-	ActivatedByUse (activatedByUse) {}
-
 bool ASectorAction::IsActivatedByUse() const
 {
-	return ActivatedByUse;
+	return !!(health & (SECSPAC_Use|SECSPAC_UseWall));
 }
 
 void ASectorAction::OnDestroy ()
diff --git a/src/r_defs.h b/src/r_defs.h
index c1bee09cf..e3eed8135 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -282,7 +282,6 @@ class ASectorAction : public AActor
 {
 	DECLARE_CLASS (ASectorAction, AActor)
 public:
-	ASectorAction (bool activatedByUse = false);
 	void OnDestroy() override;
 	void BeginPlay ();
 	void Activate (AActor *source);
@@ -292,8 +291,6 @@ public:
 	virtual bool DoTriggerAction(AActor *triggerer, int activationType);
 protected:
 	bool CheckTrigger(AActor *triggerer) const;
-private:
-	bool ActivatedByUse;
 };
 
 class ASkyViewpoint;