diff --git a/examples/calculator/calc_test.spl b/examples/calculator/calc_test.spl
index fa43b30..e7c25de 100644
--- a/examples/calculator/calc_test.spl
+++ b/examples/calculator/calc_test.spl
@@ -1,11 +1,10 @@
 func calculator(num1, num2, op) {
     if (op == "+") {
         print(num1 + num2);
-    }
-    if (op == "-") {
+    } else if (op == "-") {
         print(num1 - num2);
     }
 }
 
 calculator(5, 3, "+");   
-calculator(5, 3, "-");   
+calculator(5, 6, "-");   
diff --git a/examples/calculator/hello.spc b/examples/calculator/hello.spc
index 2416d73..6c6a4b8 100644
Binary files a/examples/calculator/hello.spc and b/examples/calculator/hello.spc differ