diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/NamespaceExistException.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/NamespaceExistException.java
index 23fa130092b..5263523417e 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/NamespaceExistException.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/NamespaceExistException.java
@@ -31,7 +31,7 @@ public class NamespaceExistException extends DoNotRetryIOException {
   public NamespaceExistException() {
   }
 
-  public NamespaceExistException(String namespace) {
-    super("Namespace " + namespace + " already exists");
+  public NamespaceExistException(String msg) {
+    super(msg);
   }
 }
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/CreateNamespaceProcedure.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/CreateNamespaceProcedure.java
index f0d0af8c537..5eb56f5456c 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/CreateNamespaceProcedure.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/CreateNamespaceProcedure.java
@@ -192,7 +192,7 @@ public class CreateNamespaceProcedure
    */
   private void prepareCreate(final MasterProcedureEnv env) throws IOException {
     if (getTableNamespaceManager(env).doesNamespaceExist(nsDescriptor.getName())) {
-      throw new NamespaceExistException(nsDescriptor.getName());
+      throw new NamespaceExistException("Namespace " + nsDescriptor.getName() + " already exists");
     }
     getTableNamespaceManager(env).validateTableAndRegionCount(nsDescriptor);
   }