diff --git a/src/compatibility.cpp b/src/compatibility.cpp
index 452360143..40d7bfbe2 100644
--- a/src/compatibility.cpp
+++ b/src/compatibility.cpp
@@ -375,6 +375,22 @@ DEFINE_ACTION_FUNCTION(DLevelCompatibility, SetThingSkills)
 	return 0;
 }
 
+DEFINE_ACTION_FUNCTION(DLevelCompatibility, SetThingXY)
+{
+	PARAM_PROLOGUE;
+	PARAM_INT(thing);
+	PARAM_FLOAT(x);
+	PARAM_FLOAT(y);
+
+	if ((unsigned)thing < MapThingsConverted.Size())
+	{
+		auto& pos = MapThingsConverted[thing].pos;
+		pos.X = x;
+		pos.Y = y;
+	}
+	return 0;
+}
+
 DEFINE_ACTION_FUNCTION(DLevelCompatibility, SetThingZ)
 {
 	PARAM_PROLOGUE;
diff --git a/wadsrc/static/zscript/level_compatibility.txt b/wadsrc/static/zscript/level_compatibility.txt
index 6502ea69b..890872342 100644
--- a/wadsrc/static/zscript/level_compatibility.txt
+++ b/wadsrc/static/zscript/level_compatibility.txt
@@ -680,6 +680,7 @@ class LevelCompatibility play
 	private static native void AddSectorTag(int sector, int tag);
 	private static native void OffsetSectorPlane(int sector, int plane, double offset);
 	private static native void SetThingSkills(int thing, int skills);
+	private static native void SetThingXY(int thing, double x, double y);
 	private static native void SetThingZ(int thing, double z);
 	private static native void SetThingFlags(int thing, int flags);
 	private static native void SetVertex(uint vertex, double x, double y);