diff --git a/src/constants/shapeTypeProperties.js b/src/constants/shapeTypeProperties.js
index f09ba3d..4e2f0a4 100644
--- a/src/constants/shapeTypeProperties.js
+++ b/src/constants/shapeTypeProperties.js
@@ -20,7 +20,8 @@ const defaultProperties = {
   z: 0.0,
   sculpt: [{ pos: 0.0, scale: 1.0 }, { pos: 1.0, scale: 1.0 }],
   twist: 0.0,
-  fill: false
+  fill: false,
+  solid: true
 };
 
 export const SHAPE_TYPE_PROPERTIES = {