diff --git a/java/search/BinarySearch3637.java b/java/search/BinarySearch3637.java
index 8ebe06b..19e4633 100644
--- a/java/search/BinarySearch3637.java
+++ b/java/search/BinarySearch3637.java
@@ -14,8 +14,8 @@ public class BinarySearch3637 {
         }
         // System.out.println(rightBoundIterative(x, a) - leftBoundIterative(x, a));
         System.out.println(
-            rightBoundRecursive(x, a, 0, a.getLength()) -
-                leftBoundRecursive(x, a, 0, a.getLength())
+            rightBoundRecursive(x, a, 0, a.getLength() - 1) -
+                leftBoundRecursive(x, a, 0, a.getLength() - 1)
         );
     }