diff --git a/src/hardware/hw_md2.c b/src/hardware/hw_md2.c
index 7ea454b30..ec58fd8aa 100644
--- a/src/hardware/hw_md2.c
+++ b/src/hardware/hw_md2.c
@@ -1362,7 +1362,7 @@ boolean HWR_DrawModel(gl_vissprite_t *spr)
 		if (!lightset)
 			HWR_ObjectLightLevelPost(spr, sector, &lightlevel, true);
 
-		HWR_Lighting(&Surf, lightlevel, colormap, P_SectorUsesDirectionalLighting(sector) && !R_ThingIsFullBright(spr->mobj) && R_ThingModelUsesDirectionalLightning(spr->mobj));
+		HWR_Lighting(&Surf, lightlevel, colormap, P_SectorUsesDirectionalLighting(sector) && !R_ThingIsFullBright(spr->mobj) && R_ThingModelUsesDirectionalLighting(spr->mobj));
 	}
 	else
 		Surf.PolyColor.rgba = 0xFFFFFFFF;
diff --git a/src/r_things.cpp b/src/r_things.cpp
index 108b305f1..2b4fcac69 100644
--- a/src/r_things.cpp
+++ b/src/r_things.cpp
@@ -3871,7 +3871,7 @@ boolean R_ThingIsFullDark(mobj_t *thing)
 	return ((thing->frame & FF_BRIGHTMASK) == FF_FULLDARK);
 }
 
-boolean R_ThingModelUsesDirectionalLightning(mobj_t *thing)
+boolean R_ThingModelUsesDirectionalLighting(mobj_t *thing)
 {
 	if (thing->type == MT_ARKARROW)
 	{
diff --git a/src/r_things.h b/src/r_things.h
index 71819de47..001981bdf 100644
--- a/src/r_things.h
+++ b/src/r_things.h
@@ -91,7 +91,7 @@ boolean R_ThingIsFloorSprite (mobj_t *thing);
 boolean R_ThingIsFullBright (mobj_t *thing);
 boolean R_ThingIsSemiBright (mobj_t *thing);
 boolean R_ThingIsFullDark (mobj_t *thing);
-boolean R_ThingModelUsesDirectionalLightning(mobj_t *mobj);
+boolean R_ThingModelUsesDirectionalLighting(mobj_t *thing);
 
 boolean R_ThingIsFlashing(mobj_t *thing);