diff --git a/src/voronoi2d.scad b/src/voronoi2d.scad
index f8c5e041..7d307d76 100644
--- a/src/voronoi2d.scad
+++ b/src/voronoi2d.scad
@@ -9,6 +9,8 @@
 **/
 
 module voronoi2d(points, spacing = 1, r = 0, delta = 0, chamfer = false, region_type = "square") {
+    echo("<b><i>voronoi2d</i> is deprecated: use <i>voronoi/vrn2_from</i> instead.</b>");
+
     xs = [for(p = points) p[0]];
     ys = [for(p = points) abs(p[1])];
 
diff --git a/src/voronoi3d.scad b/src/voronoi3d.scad
index 82bb53fa..0fa069d4 100644
--- a/src/voronoi3d.scad
+++ b/src/voronoi3d.scad
@@ -13,6 +13,8 @@ use <__comm__/__angy_angz.scad>;
 // slow but workable
 
 module voronoi3d(points, spacing = 1) {
+    echo("<b><i>voronoi3d</i> is deprecated: use <i>voronoi/vrn3_from</i> instead.</b>");
+
     xs = [for(p = points) p[0]];
     ys = [for(p = points) abs(p[1])];
     zs = [for(p = points) abs(p[2])];