diff --git a/src/p_spec.cpp b/src/p_spec.cpp
index e287ef047..0bd3d9fdb 100644
--- a/src/p_spec.cpp
+++ b/src/p_spec.cpp
@@ -248,18 +248,20 @@ DEFINE_ACTION_FUNCTION(_Line, Activate)
 	PARAM_POINTER(mo, AActor);
 	PARAM_INT(side);
 	PARAM_INT(activationType);
-	PARAM_FLOAT_DEF(optx);
-	PARAM_FLOAT_DEF(opty);
-	PARAM_FLOAT_DEF(optz);
-	if ( optx == opty == optz == NAN )
-	{
-		ACTION_RETURN_BOOL(P_ActivateLine(self, mo, side, activationType, NULL));
-	}
-	else
-	{
-		DVector3 optpos = DVector3(optx, opty, optz);
-		ACTION_RETURN_BOOL(P_ActivateLine(self, mo, side, activationType, &optpos));
-	}
+	ACTION_RETURN_BOOL(P_ActivateLine(self, mo, side, activationType, NULL));
+}
+
+DEFINE_ACTION_FUNCTION(_Line, RemoteActivate)
+{
+	PARAM_SELF_PROLOGUE(line_t);
+	PARAM_POINTER(mo, AActor);
+	PARAM_INT(side);
+	PARAM_INT(activationType);
+	PARAM_FLOAT(optx);
+	PARAM_FLOAT(opty);
+	PARAM_FLOAT(optz);
+	DVector3 optpos = DVector3(optx, opty, optz);
+	ACTION_RETURN_BOOL(P_ActivateLine(self, mo, side, activationType, &optpos));
 }
 
 //============================================================================
diff --git a/wadsrc/static/zscript/mapdata.txt b/wadsrc/static/zscript/mapdata.txt
index d7373d766..4267b7b05 100644
--- a/wadsrc/static/zscript/mapdata.txt
+++ b/wadsrc/static/zscript/mapdata.txt
@@ -156,7 +156,8 @@ struct Line native play
 	native Line getPortalDestination();
 	native int getPortalAlignment();
 	native int Index();
-	native bool Activate(Actor activator, int side, int type, Vector3 pos = (double.nan, double.nan, double.nan));
+	native bool Activate(Actor activator, int side, int type);
+	native bool RemoteActivate(Actor activator, int side, int type, Vector3 pos);
 	
 	int GetUDMFInt(Name nm)
 	{