diff --git a/security/manager/pki/resources/locale/en-US/PrefOverlay.dtd b/security/manager/pki/resources/locale/en-US/PrefOverlay.dtd
index 296b429cb2a7..fd42ed26f28b 100644
--- a/security/manager/pki/resources/locale/en-US/PrefOverlay.dtd
+++ b/security/manager/pki/resources/locale/en-US/PrefOverlay.dtd
@@ -22,7 +22,7 @@
   -->
 
 <!ENTITY  masterpass.label             "Master Passwords">
-<!ENTITY  security.label               "Privacy & Security">
+<!ENTITY  security.label               "Privacy and Security">
 <!ENTITY  ssl.label                    "SSL">
 <!ENTITY  certs.label                  "Certificates">
 <!ENTITY  validation.label             "Validation">