diff --git a/platform/platform-api/src/com/intellij/openapi/ui/MasterDetailsComponent.java b/platform/platform-api/src/com/intellij/openapi/ui/MasterDetailsComponent.java
index 77f1f6e6ab9e..604cd4487911 100644
--- a/platform/platform-api/src/com/intellij/openapi/ui/MasterDetailsComponent.java
+++ b/platform/platform-api/src/com/intellij/openapi/ui/MasterDetailsComponent.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.openapi.ui;
 
 import com.intellij.CommonBundle;
@@ -681,14 +681,14 @@ public abstract class MasterDetailsComponent implements Configurable, DetailsCom
         final String name = scopeConfigurable.getDisplayName();
         if (name.trim().isEmpty()) {
           selectNodeInTree(node);
-          throw new ConfigurationException("Name should contain non-space characters");
+          throw new ConfigurationException(UIBundle.message("master.detail.err.empty.name"));
         }
         if (names.contains(name)) {
           final NamedConfigurable selectedConfigurable = getSelectedConfigurable();
           if (selectedConfigurable == null || !Comparing.strEqual(selectedConfigurable.getDisplayName(), name)) {
             selectNodeInTree(node);
           }
-          throw new ConfigurationException(CommonBundle.message("smth.already.exist.error.message", prefix, name), title);
+          throw new ConfigurationException(UIBundle.message("master.detail.err.duplicate", prefix, name), title);
         }
         names.add(name);
       }
diff --git a/platform/platform-resources-en/src/messages/CommonBundle.properties b/platform/platform-resources-en/src/messages/CommonBundle.properties
index 69647ee2417b..beee4aac690c 100644
--- a/platform/platform-resources-en/src/messages/CommonBundle.properties
+++ b/platform/platform-resources-en/src/messages/CommonBundle.properties
@@ -70,7 +70,7 @@ button.background=&Background
 button.load.file=Load File
 date.frequency=Once {0}
 name.label.text=Na&me:
-smth.already.exist.error.message={0} with name ''{1}'' already exists
+
 comparison.policy.default.name=Default
 comparison.policy.trim.space.name=Trim space
 comparison.policy.ignore.spaces.name=Ignore spaces
diff --git a/platform/platform-resources-en/src/messages/UIBundle.properties b/platform/platform-resources-en/src/messages/UIBundle.properties
index dc8792c55550..7086284adf4d 100644
--- a/platform/platform-resources-en/src/messages/UIBundle.properties
+++ b/platform/platform-resources-en/src/messages/UIBundle.properties
@@ -217,3 +217,6 @@ date.dialog.title=Choose Date
 
 io.error.dialog.no.proxy=Set up HTTP proxy settings
 io.error.dialog.retry=Try again
+
+master.detail.err.empty.name=Name should contain non-space characters
+master.detail.err.duplicate={0} with the name ''{1}'' already exists
\ No newline at end of file