diff --git a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminEndpoint.java b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminEndpoint.java
index deba7a34a69..727e86045d8 100644
--- a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminEndpoint.java
+++ b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminEndpoint.java
@@ -488,7 +488,7 @@ public class RSGroupAdminEndpoint implements MasterCoprocessor, MasterObserver {
                                  NamespaceDescriptor ns) throws IOException {
     String group = ns.getConfigurationValue(RSGroupInfo.NAMESPACE_DESC_PROP_GROUP);
     if(group != null && groupAdminServer.getRSGroupInfo(group) == null) {
-      throw new ConstraintException("Region server group "+group+" does not exit");
+      throw new ConstraintException("Region server group " + group + " does not exist.");
     }
   }
 
diff --git a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
index 7514ad9904c..502d92b0554 100644
--- a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
+++ b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
@@ -357,7 +357,7 @@ public class RSGroupAdminServer implements RSGroupAdmin {
   @Override
   public void moveTables(Set<TableName> tables, String targetGroup) throws IOException {
     if (tables == null) {
-      throw new ConstraintException("The list of servers cannot be null.");
+      throw new ConstraintException("The list of tables cannot be null.");
     }
     if (tables.size() < 1) {
       LOG.debug("moveTables() passed an empty set. Ignoring.");