diff --git a/Source/Core/PolygonGeometry.js b/Source/Core/PolygonGeometry.js
index 4526b34ebbcd..479a6e5ac329 100644
--- a/Source/Core/PolygonGeometry.js
+++ b/Source/Core/PolygonGeometry.js
@@ -559,7 +559,7 @@ define([
     function PolygonGeometry(options) {
         //>>includeStart('debug', pragmas.debug);
         Check.typeOf.object('options', options);
-        Check.typeOf.object('options.polygonHierarchy');
+        Check.typeOf.object('options.polygonHierarchy', options.polygonHierarchy);
         if (defined(options.perPositionHeight) && options.perPositionHeight && defined(options.height)) {
             throw new DeveloperError('Cannot use both options.perPositionHeight and options.height');
         }
diff --git a/Source/Core/PolygonOutlineGeometry.js b/Source/Core/PolygonOutlineGeometry.js
index 80b85896de1d..f24eee42c43f 100644
--- a/Source/Core/PolygonOutlineGeometry.js
+++ b/Source/Core/PolygonOutlineGeometry.js
@@ -289,7 +289,7 @@ define([
     function PolygonOutlineGeometry(options) {
         //>>includeStart('debug', pragmas.debug);
         Check.typeOf.object('options', options);
-        Check.typeOf.object('options.polygonHierarchy');
+        Check.typeOf.object('options.polygonHierarchy', options.polygonHierarchy);
 
         if (defined(options.perPositionHeight) && options.perPositionHeight && defined(options.height)) {
             throw new DeveloperError('Cannot use both options.perPositionHeight and options.height');