diff --git a/Objective-C/main.m b/Objective-C/main.m
index 4bc7235..83f9a61 100644
--- a/Objective-C/main.m
+++ b/Objective-C/main.m
@@ -14,7 +14,7 @@
 @implementation XOREncryption
 
 +(NSString *) encryptDecrypt:(NSString *)input {
-    char key[] = {'K', 'C', 'Q'};
+    char key[] = {'K', 'C', 'Q'}; //Can be any chars, and any size array
     NSMutableString *output = [[NSMutableString alloc] init];
     
     for(int i = 0; i < input.length; i++) {