diff --git a/include/light/phong.hh b/include/light/phong.hh
index 3ef6defb..49e61f27 100644
--- a/include/light/phong.hh
+++ b/include/light/phong.hh
@@ -49,6 +49,7 @@ bool FacesSmoothed(const mface_t *f1, const mface_t *f2);
 const std::set<const mface_t *> &GetSmoothFaces(const mface_t *face);
 const std::vector<const mface_t *> &GetPlaneFaces(const mface_t *face);
 const mface_t *Face_EdgeIndexSmoothed(const mbsp_t *bsp, const mface_t *f, const int edgeindex);
+int Q2_FacePhongValue(const mbsp_t *bsp, const mface_t *face);
 
 /// a directed edge can be used by more than one face, e.g. two cube touching just along an edge
 using edgeToFaceMap_t = std::map<std::pair<int, int>, std::vector<const mface_t *>>;
diff --git a/light/ltface.cc b/light/ltface.cc
index 0b033c94..4025ec1f 100644
--- a/light/ltface.cc
+++ b/light/ltface.cc
@@ -874,7 +874,7 @@ static std::unique_ptr<lightsurf_t> Lightsurf_Init(
     lightsurf->lightmapscale = (facesup && facesup->lmscale > modelinfo->lightmapscale) ? facesup->lmscale : modelinfo->lightmapscale;
 
     const surfflags_t &extended_flags = extended_texinfo_flags[face->texinfo];
-    lightsurf->curved = extended_flags.phong_angle != 0;
+    lightsurf->curved = extended_flags.phong_angle != 0 || Q2_FacePhongValue(bsp, face);
 
     // nodirt
     if (modelinfo->dirt.isChanged()) {
diff --git a/light/phong.cc b/light/phong.cc
index 7d80f840..e2b697fa 100644
--- a/light/phong.cc
+++ b/light/phong.cc
@@ -389,7 +389,7 @@ static vector<face_cache_t> MakeFaceCache(const mbsp_t *bsp)
  * Q2: Returns nonzero if phong is requested on this face, in which case that is
  * the face tag to smooth with. Otherwise returns 0.
  */
-static int Q2_FacePhongValue(const mbsp_t *bsp, const mface_t *face)
+int Q2_FacePhongValue(const mbsp_t *bsp, const mface_t *face)
 {
     const mtexinfo_t *texinfo = BSP_GetTexinfo(bsp, face->texinfo);
     if (texinfo != nullptr) {