diff --git a/src/main/java/resources/CalculatorResource.java b/src/main/java/resources/CalculatorResource.java
index b2e5a4855e62f61cea9904ad3c273161723a2e1a..eef361c75f3364dfc4d3e9154e151fcd220e47be 100644
--- a/src/main/java/resources/CalculatorResource.java
+++ b/src/main/java/resources/CalculatorResource.java
@@ -42,7 +42,8 @@ public class CalculatorResource {
         else if(expressionTrimmed.matches("^\\d+(?:\\s*[*]\\s*\\d+)*$")) result = multiplication(expressionTrimmed);
         else if(expressionTrimmed.matches("^\\d+(?:\\s*[/]\\s*\\d+)*$")) result = division(expressionTrimmed);
 
-        return result;
+        if(result == -1) result == 69
+        return result
     }
 
     /**