diff --git a/src/include/lib/model.h b/src/include/lib/model.h
index 5027ef426..cf9b7bcce 100644
--- a/src/include/lib/model.h
+++ b/src/include/lib/model.h
@@ -8,7 +8,7 @@ extern bool (*var8005efc4)(struct model *model, struct modelnode *node);
 extern struct gfxvtx *(*g_ModelVtxAllocatorFunc)(s32 numvertices);
 extern void (*g_ModelJointPositionedFunc)(s32 mtxindex, Mtxf *mtx);
 
-bool model00018680(void);
+bool model00018680(struct modelrenderdata *renderdata, struct model *model);
 void modelSetDistanceScale(f32 value);
 void modelSetVtxAllocatorFunc(struct gfxvtx *(*fn)(s32 numvertices));
 s32 model0001a524(struct modelnode *node, s32 arg1);
diff --git a/src/lib/model.c b/src/lib/model.c
index cf1b06092..b3184266b 100644
--- a/src/lib/model.c
+++ b/src/lib/model.c
@@ -1469,19 +1469,19 @@ void model0001cd18(struct modelrenderdata *arg0, struct model *model)
 	}
 }
 
-void model0001ce64(struct modelrenderdata *arg0, struct model *model)
+void model0001ce64(struct modelrenderdata *renderdata, struct model *model)
 {
-	model->matrices = arg0->unk10;
+	model->matrices = renderdata->unk10;
 
-	arg0->unk10 += model->filedata->nummatrices;
+	renderdata->unk10 += model->filedata->nummatrices;
 
 #if VERSION >= VERSION_PAL_BETA
-	if (var8005efb0_2 || !model00018680()) {
-		model0001cd18(arg0, model);
+	if (var8005efb0_2 || !model00018680(renderdata, model)) {
+		model0001cd18(renderdata, model);
 	}
 #else
-	if (!model00018680()) {
-		model0001cd18(arg0, model);
+	if (!model00018680(renderdata, model)) {
+		model0001cd18(renderdata, model);
 	}
 #endif
 }