diff --git a/src/Example2.js b/src/Example2.js
index b0a922e..58b6463 100644
--- a/src/Example2.js
+++ b/src/Example2.js
@@ -13,7 +13,7 @@ var DuplicatorExample2 = function(){
     self.calc = function(){
         var input = self.input();
 
-        if (! validation.test(input)){
+        if (! validation.test(input) || input.length < 1){
             self.inputValidation(false);
             self.validationMessage('You must enter a number!');
             self.output('');
diff --git a/test/Example2Test.js b/test/Example2Test.js
index fd26745..20f3fec 100644
--- a/test/Example2Test.js
+++ b/test/Example2Test.js
@@ -30,6 +30,13 @@ describe("Duplicator Example 2", function() {
 
         expect(viewModel.inputValidation()).toEqual(false);
     })
+    
+    it("should validate that input is not empty", function(){
+        viewModel.input("");
+        viewModel.calc();
+
+        expect(viewModel.inputValidation()).toEqual(false);
+    })
 
     it("should not indicate validation error, after input is corrected", function(){
         viewModel.input("garbage");