diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap.java b/src/com/jwetherell/algorithms/data_structures/BinaryHeap.java
index 81932349..701d5558 100644
--- a/src/com/jwetherell/algorithms/data_structures/BinaryHeap.java
+++ b/src/com/jwetherell/algorithms/data_structures/BinaryHeap.java
@@ -262,6 +262,7 @@ private void shrink() {
         @Override
         public void clear() {
             size = 0;
+            this.array[0] = null;
         }
 
         /**