diff --git a/wadsrc/static/zscript/base.txt b/wadsrc/static/zscript/base.txt
index 351d4d949..f9fd571ed 100644
--- a/wadsrc/static/zscript/base.txt
+++ b/wadsrc/static/zscript/base.txt
@@ -449,8 +449,8 @@ class BlockLinesIterator : Object native
 	native Vector3 position;
 	native int portalflags;
 	
-	native static BlockThingsIterator Create(Actor origin, double checkradius = -1);
-	native static BlockThingsIterator CreateFromPos(Vector3 pos, double checkh, double checkradius, Sector sec = null);
+	native static BlockLinesIterator Create(Actor origin, double checkradius = -1);
+	native static BlockLinesIterator CreateFromPos(Vector3 pos, double checkh, double checkradius, Sector sec = null);
 	native bool Next();
 }