diff --git a/source/core/actorlist.cpp b/source/core/actorlist.cpp
index 539564fd2..464424c78 100644
--- a/source/core/actorlist.cpp
+++ b/source/core/actorlist.cpp
@@ -547,7 +547,7 @@ DEFINE_FIELD_NAMED(DCoreActor, sprext.mdanimcur, mdanimcur)
 DEFINE_FIELD_NAMED(DCoreActor, sprext.renderflags, renderflags)
 DEFINE_FIELD_NAMED(DCoreActor, sprext.alpha, alpha)
 DEFINE_FIELD_NAMED(DCoreActor, time, spawnindex)
-DEFINE_FIELD_NAMED(DCoreActor, spritesetindex, spritesetpic)
+DEFINE_FIELD(DCoreActor, spritesetindex)
 DEFINE_FIELD_NAMED(DCoreActor, spr.angle, angle)
 DEFINE_FIELD(DCoreActor, vel)
 
diff --git a/source/games/duke/src/vmexports.cpp b/source/games/duke/src/vmexports.cpp
index 539f073a3..18fa3ca0b 100644
--- a/source/games/duke/src/vmexports.cpp
+++ b/source/games/duke/src/vmexports.cpp
@@ -73,7 +73,7 @@ player_struct* duke_checkcursectnums(sectortype* sector)
 {
 	if (!sector) return nullptr;
 	int pp = checkcursectnums(sector);
-	return pp ? &ps[pp] : nullptr;
+	return pp >= 0 ? &ps[pp] : nullptr;
 }
 
 DEFINE_ACTION_FUNCTION_NATIVE(_Duke, checkcursectnums, duke_checkcursectnums)
diff --git a/wadsrc/static/zscript/coreactor.zs b/wadsrc/static/zscript/coreactor.zs
index 9d2bdd4db..dd56af012 100644
--- a/wadsrc/static/zscript/coreactor.zs
+++ b/wadsrc/static/zscript/coreactor.zs
@@ -40,7 +40,7 @@ class CoreActor native
 	native double angle;
 	native Vector3 vel;
 
-	native readonly int16 spritesetpic;
+	native readonly int16 spritesetindex;
 	native readonly int spawnindex;
 
 	native void setpos(Vector3 newpos, bool relink = true);
diff --git a/wadsrc/static/zscript/games/duke/dukeactor.zs b/wadsrc/static/zscript/games/duke/dukeactor.zs
index ffa37516c..bc0420c23 100644
--- a/wadsrc/static/zscript/games/duke/dukeactor.zs
+++ b/wadsrc/static/zscript/games/duke/dukeactor.zs
@@ -36,7 +36,6 @@ class DukeActor : CoreActor native
 	native int palvals;
 	native int temp_data[6];
 	native private int flags1, flags2;
-	native readonly int16 spritesetindex;
 	native walltype temp_walls[2];
 	native sectortype temp_sect, actorstayput;