diff --git a/937 - Reorder Log Files.java b/937 - Reorder Log Files.java
index 1cd76c0..0cfecca 100644
--- a/937 - Reorder Log Files.java	
+++ b/937 - Reorder Log Files.java	
@@ -22,7 +22,14 @@ public String[] reorderLogFiles(String[] logs) {
                 letters.add(new Log(id, l));
             }
         }
-        Collections.sort(letters, (a, b) -> (a.log.compareTo(b.log)));
+        Collections.sort(letters, (a, b) -> {
+            //remove toLowerCase if you want to disable case insensitivity
+            int r= a.log.toLowerCase().compareTo(b.log.toLowerCase());
+            if(r==0) {
+                return a.id.compareTo(b.id);
+            }
+            return r;
+        });
         int i = 0;
         for (Log l: letters) {
             ans[i++] = l.id + " " + l.log;
@@ -32,4 +39,4 @@ public String[] reorderLogFiles(String[] logs) {
         }
         return ans;
     }
-}
\ No newline at end of file
+}