diff --git a/wellknown.js b/wellknown.js
index 0cf84a0..00dc3d4 100644
--- a/wellknown.js
+++ b/wellknown.js
@@ -252,7 +252,11 @@ function stringify (gj) {
 
   switch (gj.type) {
     case 'Point':
-      return 'POINT (' + pairWKT(gj.coordinates) + ')';
+      if (gj.coordinates.length == 3)
+        return 'POINT Z (' + pairWKT(gj.coordinates) + ')';
+      else if (gj.coordinates.length == 2)
+        return 'POINT (' + pairWKT(gj.coordinates) + ')';
+      throw new Error("Invalid coordinates for point provided");
     case 'LineString':
       return 'LINESTRING (' + ringWKT(gj.coordinates) + ')';
     case 'Polygon':
@@ -271,4 +275,4 @@ function stringify (gj) {
 }
 
 },{}]},{},[1])(1)
-});
\ No newline at end of file
+});