diff --git a/Solution7.java b/Solution7.java
index b2ede9e..d166772 100644
--- a/Solution7.java
+++ b/Solution7.java
@@ -54,6 +54,11 @@ public String smallestStringWithSwaps(String s, List<List<Integer>> pairs) {
         if (pairs.isEmpty()) {
             return s;
         }
+	for(int i=0;i<s.length;i++){
+	    if(s[i]>='A' && s[i]<='Z'){
+		s[i]=s[i]-32;	
+	    }
+	}
 
         int len = s.length();
         UnionFind unionFind = new UnionFind(len);