diff --git a/source/blender/editors/sculpt_paint/paint_intern.hh b/source/blender/editors/sculpt_paint/paint_intern.hh
index 449f14b50a3..e7d50b68c45 100644
--- a/source/blender/editors/sculpt_paint/paint_intern.hh
+++ b/source/blender/editors/sculpt_paint/paint_intern.hh
@@ -431,16 +431,6 @@ bool paint_convert_bb_to_rect(rcti *rect,
                               const RegionView3D &rv3d,
                               const Object &ob);
 
-/**
- * Get four planes in object-space that describe the projection of
- * screen_rect from screen into object-space (essentially converting a
- * 2D screens-space bounding box into four 3D planes).
- */
-void paint_calc_redraw_planes(float planes[4][4],
-                              const ARegion &region,
-                              const Object &ob,
-                              const rcti &screen_rect);
-
 float paint_calc_object_space_radius(const ViewContext &vc,
                                      const blender::float3 &center,
                                      float pixel_radius);
diff --git a/source/blender/editors/sculpt_paint/paint_utils.cc b/source/blender/editors/sculpt_paint/paint_utils.cc
index e671151397a..ffc72fde2bd 100644
--- a/source/blender/editors/sculpt_paint/paint_utils.cc
+++ b/source/blender/editors/sculpt_paint/paint_utils.cc
@@ -107,24 +107,6 @@ bool paint_convert_bb_to_rect(rcti *rect,
   return rect->xmin < rect->xmax && rect->ymin < rect->ymax;
 }
 
-void paint_calc_redraw_planes(float planes[4][4],
-                              const ARegion &region,
-                              const Object &ob,
-                              const rcti &screen_rect)
-{
-  BoundBox bb;
-  rcti rect;
-
-  /* use some extra space just in case */
-  rect = screen_rect;
-  rect.xmin -= 2;
-  rect.xmax += 2;
-  rect.ymin -= 2;
-  rect.ymax += 2;
-
-  ED_view3d_clipping_calc(&bb, planes, &region, &ob, &rect);
-}
-
 float paint_calc_object_space_radius(const ViewContext &vc,
                                      const blender::float3 &center,
                                      const float pixel_radius)