diff --git a/utils/base64.yar b/utils/base64.yar
index a5fe55f..7efbf43 100644
--- a/utils/base64.yar
+++ b/utils/base64.yar
@@ -3,7 +3,7 @@
     This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.
 
 */
-rule contentis_base64 : Base64
+rule contains_base64 : Base64
 {
     meta:
         author = "Jaume Martin"