diff --git a/source/blender/editors/sculpt_paint/sculpt.cc b/source/blender/editors/sculpt_paint/sculpt.cc
index cc1d99ea167..f6358717b0a 100644
--- a/source/blender/editors/sculpt_paint/sculpt.cc
+++ b/source/blender/editors/sculpt_paint/sculpt.cc
@@ -120,7 +120,7 @@ void SCULPT_vertex_random_access_ensure(SculptSession *ss)
   }
 }
 
-int SCULPT_vertex_count_get(SculptSession *ss)
+int SCULPT_vertex_count_get(const SculptSession *ss)
 {
   switch (BKE_pbvh_type(ss->pbvh)) {
     case PBVH_FACES:
@@ -134,7 +134,7 @@ int SCULPT_vertex_count_get(SculptSession *ss)
   return 0;
 }
 
-const float *SCULPT_vertex_co_get(SculptSession *ss, PBVHVertRef vertex)
+const float *SCULPT_vertex_co_get(const SculptSession *ss, PBVHVertRef vertex)
 {
   switch (BKE_pbvh_type(ss->pbvh)) {
     case PBVH_FACES: {
@@ -190,7 +190,7 @@ void SCULPT_vertex_color_set(SculptSession *ss, PBVHVertRef vertex, const float
   BKE_pbvh_vertex_color_set(ss->pbvh, vertex, color);
 }
 
-void SCULPT_vertex_normal_get(SculptSession *ss, PBVHVertRef vertex, float no[3])
+void SCULPT_vertex_normal_get(const SculptSession *ss, PBVHVertRef vertex, float no[3])
 {
   switch (BKE_pbvh_type(ss->pbvh)) {
     case PBVH_FACES: {
@@ -377,7 +377,7 @@ int SCULPT_active_face_set_get(SculptSession *ss)
   return SCULPT_FACE_SET_NONE;
 }
 
-bool SCULPT_vertex_visible_get(SculptSession *ss, PBVHVertRef vertex)
+bool SCULPT_vertex_visible_get(const SculptSession *ss, PBVHVertRef vertex)
 {
   switch (BKE_pbvh_type(ss->pbvh)) {
     case PBVH_FACES: {
@@ -6258,7 +6258,7 @@ void SCULPT_face_set_set(SculptSession *ss, PBVHFaceRef face, int fset)
   }
 }
 
-int SCULPT_vertex_island_get(SculptSession *ss, PBVHVertRef vertex)
+int SCULPT_vertex_island_get(const SculptSession *ss, PBVHVertRef vertex)
 {
   if (ss->attrs.topology_island_key) {
     return *static_cast<uint8_t *>(SCULPT_vertex_attr_get(vertex, ss->attrs.topology_island_key));
diff --git a/source/blender/editors/sculpt_paint/sculpt_intern.hh b/source/blender/editors/sculpt_paint/sculpt_intern.hh
index c1843899663..c08eb5ccdd0 100644
--- a/source/blender/editors/sculpt_paint/sculpt_intern.hh
+++ b/source/blender/editors/sculpt_paint/sculpt_intern.hh
@@ -851,11 +851,11 @@ bool SCULPT_stroke_is_first_brush_step_of_symmetry_pass(StrokeCache *cache);
 /** Ensure random access; required for PBVH_BMESH */
 void SCULPT_vertex_random_access_ensure(SculptSession *ss);
 
-int SCULPT_vertex_count_get(SculptSession *ss);
-const float *SCULPT_vertex_co_get(SculptSession *ss, PBVHVertRef vertex);
+int SCULPT_vertex_count_get(const SculptSession *ss);
+const float *SCULPT_vertex_co_get(const SculptSession *ss, PBVHVertRef vertex);
 
 /** Get the normal for a given sculpt vertex; do not modify the result */
-void SCULPT_vertex_normal_get(SculptSession *ss, PBVHVertRef vertex, float no[3]);
+void SCULPT_vertex_normal_get(const SculptSession *ss, PBVHVertRef vertex, float no[3]);
 
 float SCULPT_vertex_mask_get(SculptSession *ss, PBVHVertRef vertex);
 void SCULPT_vertex_color_get(const SculptSession *ss, PBVHVertRef vertex, float r_color[4]);
@@ -951,7 +951,7 @@ bool SCULPT_vertex_is_boundary(const SculptSession *ss, PBVHVertRef vertex);
 /** \name Sculpt Visibility API
  * \{ */
 
-bool SCULPT_vertex_visible_get(SculptSession *ss, PBVHVertRef vertex);
+bool SCULPT_vertex_visible_get(const SculptSession *ss, PBVHVertRef vertex);
 bool SCULPT_vertex_all_faces_visible_get(const SculptSession *ss, PBVHVertRef vertex);
 bool SCULPT_vertex_any_face_visible_get(SculptSession *ss, PBVHVertRef vertex);
 
@@ -1790,7 +1790,7 @@ void SCULPT_topology_islands_ensure(Object *ob);
 void SCULPT_topology_islands_invalidate(SculptSession *ss);
 
 /** Get vertex island key. */
-int SCULPT_vertex_island_get(SculptSession *ss, PBVHVertRef vertex);
+int SCULPT_vertex_island_get(const SculptSession *ss, PBVHVertRef vertex);
 
 /** \} */