diff --git a/README.md b/README.md
index fd482ee..88714d1 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ Download both files as csvs to the same folder as the script. Then, using the co
 ./ecompare -data=emails -A=fileA.csv -B=fileB.csv
 ```
 
-* `-data` specifies the type of data to compare. It can be `emails`, `sha256` or `dni` (Spanish ID numbers)
+* `-data` specifies the type of data to compare. It can be `emails`, `sha256`, `urls` or `dni` (Spanish ID numbers)
 * `-A` and `-B` specify the names of both files.
 
 #### Get details about the comparison
diff --git a/doc.go b/doc.go
index c056c95..66040e2 100644
--- a/doc.go
+++ b/doc.go
@@ -30,7 +30,7 @@ Download both files as csvs to the same folder as the script. Then, using the co
 
     ./ecompare -data=emails -A=fileA.csv -B=fileB.csv
 
-    -data specifies the type of data to compare. It can be emails, sha256 or dni (Spanish ID numbers)
+    -data specifies the type of data to compare. It can be emails, sha256, urls or dni (Spanish ID numbers)
 
     -A and -B specify the names of both files.
 
diff --git a/help.go b/help.go
index b029fc9..d855429 100644
--- a/help.go
+++ b/help.go
@@ -10,7 +10,7 @@ func helpMe() {
 
 Script to compare unique data from two text files, named A and B
 
-- unique data includes emails or sha256
+- unique data includes emails, sha256, urls or dni
 - text files include csv, txt, sql or html
 
 Use the options as in this example:
@@ -30,7 +30,7 @@ Each time the script runs it overwrites this 3 files.
 Comand line options:
 
 -help				Display this help
--data=emails			What to compare in the files. It can be "emails", "sha256" or "dni". By default it compares emails.
+-data=emails			What to compare in the files. It can be "emails", "sha256", "urls" or "dni". By default it compares emails.
 -A=fileA.csv			File A name
 -B=fileB.csv			File B name
 -debug=true			Debug the script