diff --git a/README.md b/README.md
index bc33daf62..c85958fcb 100755
--- a/README.md
+++ b/README.md
@@ -57,6 +57,7 @@ function MyAddNode()
   this.addInput("A","number");
   this.addInput("B","number");
   this.addOutput("A+B","number");
+  this.properties = { precision: 1 };
 }
 
 //name to show