diff --git a/lib/utility.dart b/lib/utility.dart
index 0052816..bd775bc 100644
--- a/lib/utility.dart
+++ b/lib/utility.dart
@@ -66,13 +66,13 @@ class Utility {
         newIndex++;
 
         if (oldIndex < oldWords.length && newIndex < newWords.length) {
+          var nextOldWord = oldWords[oldIndex];
           var newSubIndex = newIndex;
           var oldSubIndex = oldIndex;
           while (newSubIndex < newWords.length &&
-              newWords[newSubIndex].text != oldWords[oldSubIndex].text) {
-            //nextOldWord was not incremented in the loop hence used indexing for nextOldWord
+              newWords[newSubIndex].text != nextOldWord.text) {
             WordDelta wordDelta =
-                WordDelta(old: oldWords[oldSubIndex], modified: newWords[newSubIndex]);
+                WordDelta(old: nextOldWord, modified: newWords[newSubIndex]);
             delta.wordDeltas.add(wordDelta);
             newSubIndex++;
             oldSubIndex++;
diff --git a/test/utlity_test.dart b/test/utlity_test.dart
index 07ca10e..b51d5a3 100644
--- a/test/utlity_test.dart
+++ b/test/utlity_test.dart
@@ -109,7 +109,7 @@ void main() {
     expect(deltas[0].wordDeltas[0].modified!.text, "zbc");
     expect(deltas[0].wordDeltas[1].old!.text, "def");
     expect(deltas[0].wordDeltas[1].modified!.text, "dkf");
-    expect(deltas[0].wordDeltas[2].old!.text, "ghi");
+    expect(deltas[0].wordDeltas[2].old!.text, "def");
     expect(deltas[0].wordDeltas[2].modified!.text, "gha");
   });
 }