diff --git a/Week 2/Birthday Problem/Logic.java b/Week 2/Birthday Problem/Logic.java
index 6400d78..023318e 100644
--- a/Week 2/Birthday Problem/Logic.java	
+++ b/Week 2/Birthday Problem/Logic.java	
@@ -92,7 +92,7 @@ public double calculate(int size, int count) {
                 }
             }
         }
-        return dupcount*100.0/count;
+        return dupcount*100.0/(double)count;
 
     }
     // TODO - add your code here