diff --git a/src/l10n.json b/src/l10n.json
index 5ad8d1a53..2eddc42b5 100644
--- a/src/l10n.json
+++ b/src/l10n.json
@@ -2,7 +2,7 @@
     "general.accountSettings": "Account settings",
     "general.about": "About",
     "general.aboutScratch": "About Scratch",
-    "general.apiError": "Oops! Our server had an error.",
+    "general.apiError": "Whoops, Scratch had an error.",
     "general.back": "Back",
     "general.birthMonth": "Birth Month",
     "general.birthYear": "Birth Year",
@@ -195,9 +195,9 @@
     "registration.validationPasswordLength": "Must be 6 letters or longer",
     "registration.validationPasswordNotEquals": "Password is too easy to guess. Try something else?",
     "registration.validationPasswordNotUsername": "Password can’t match your username",
-    "registration.validationUsernameRegexp": "Your username may only contain letters, numbers, \"-\", and \"_\"",
-    "registration.validationUsernameMinLength": "Must be more than 3 letters long",
-    "registration.validationUsernameMaxLength": "“Must be fewer than 20 letters long",
+    "registration.validationUsernameRegexp": "Usernames can only use letters, numbers, - and _",
+    "registration.validationUsernameMinLength": "Must be 3 letters or longer",
+    "registration.validationUsernameMaxLength": "Must be 20 letters or shorter",
     "registration.validationUsernameExists": "Username taken. Try another?",
     "registration.validationUsernameNotAllowed": "Username not allowed",
     "registration.validationUsernameVulgar": "Hmm, that looks inappropriate",