diff --git a/src/test/java/org/bitbiome/commands/ShopCommandTest.java b/src/test/java/org/bitbiome/commands/ShopCommandTest.java
index df98d22..0e28dfb 100755
--- a/src/test/java/org/bitbiome/commands/ShopCommandTest.java
+++ b/src/test/java/org/bitbiome/commands/ShopCommandTest.java
@@ -25,4 +25,10 @@ public class ShopCommandTest {
         boolean result = shopCommand.validInput("3");
         assertEquals(expected, result);
     }
+    @Test
+    public void testValidInput4(){
+        boolean expected = false;
+        boolean result = shopCommand.validInput("4");
+        assertEquals(expected, result);
+    }
 }