diff --git a/site-manage-participant-helper/src/bundle/org/sakaiproject/site/tool/participant/bundle/sitesetupgeneric.properties b/site-manage-participant-helper/src/bundle/org/sakaiproject/site/tool/participant/bundle/sitesetupgeneric.properties
index f7a1d50..9409909 100644
--- a/site-manage-participant-helper/src/bundle/org/sakaiproject/site/tool/participant/bundle/sitesetupgeneric.properties
+++ b/site-manage-participant-helper/src/bundle/org/sakaiproject/site/tool/participant/bundle/sitesetupgeneric.properties
@@ -164,6 +164,7 @@ java.user = User
 java.username = ''{0}'' is not a valid username.
 java.notemailid = ''{0}'' is not an email id.
 java.emailaddress = ''{0}'' is not a valid email address.
+java.emailbaddomain = ''{0}'' has a domain that cannot be used for ''{1}''
 java.roletype = Please choose the role type.
 
 
diff --git a/site-manage-participant-helper/src/java/org/sakaiproject/site/tool/helper/participant/impl/SiteAddParticipantHandler.java b/site-manage-participant-helper/src/java/org/sakaiproject/site/tool/helper/participant/impl/SiteAddParticipantHandler.java
index 4f21af7..4a27d98 100644
--- a/site-manage-participant-helper/src/java/org/sakaiproject/site/tool/helper/participant/impl/SiteAddParticipantHandler.java
+++ b/site-manage-participant-helper/src/java/org/sakaiproject/site/tool/helper/participant/impl/SiteAddParticipantHandler.java
@@ -763,9 +763,9 @@ public class SiteAddParticipantHandler {
 					} else if (nonOfficialAccount != null
 							&& !isValidDomain(nonOfficialAccount)) {
 						// wrong string inside nonOfficialAccount id
-						targettedMessageList.addMessage(new TargettedMessage("java.emailaddress",
-		                new Object[] { nonOfficialAccount }, 
-		                TargettedMessage.SEVERITY_ERROR));
+						targettedMessageList.addMessage(new TargettedMessage("java.emailbaddomain",
+								new Object[] { nonOfficialAccount, messageLocator.getMessage("add.nonofficial.title")}, 
+								TargettedMessage.SEVERITY_ERROR));
 					} else {
 						try {
 							// if the nonOfficialAccount user already exists