diff --git a/src/main/java/com/thealgorithms/datastructures/heaps/MinHeap.java b/src/main/java/com/thealgorithms/datastructures/heaps/MinHeap.java
index 37434d207725..b2579615452e 100644
--- a/src/main/java/com/thealgorithms/datastructures/heaps/MinHeap.java
+++ b/src/main/java/com/thealgorithms/datastructures/heaps/MinHeap.java
@@ -50,7 +50,7 @@ private void swap(int index1, int index2) {
     // Toggle an element up to its right place as long as its key is lower than its parent's
     private void toggleUp(int elementIndex) {
         double key = minHeap.get(elementIndex - 1).getKey();
-        while (getElementKey((int) Math.floor(elementIndex / 2.0)) > key) {
+        while (getElementKey((int) Math.floor(elementIndex / 2.0) + 1) > key) {
             swap(elementIndex, (int) Math.floor(elementIndex / 2.0));
             elementIndex = (int) Math.floor(elementIndex / 2.0);
         }