diff --git a/platform/core-api/src/com/intellij/DynamicBundle.java b/platform/core-api/src/com/intellij/DynamicBundle.java
index 61396a8d3d38..ede07a778a76 100644
--- a/platform/core-api/src/com/intellij/DynamicBundle.java
+++ b/platform/core-api/src/com/intellij/DynamicBundle.java
@@ -38,8 +38,7 @@ public class DynamicBundle extends AbstractBundle {
 
   private static @NotNull String ourLangTag = Locale.ENGLISH.toLanguageTag();
 
-  @ApiStatus.Internal
-  public static final ConcurrentMap<String, ResourceBundle> bundles = new ConcurrentHashMap<>();
+  private static final ConcurrentMap<String, ResourceBundle> bundles = new ConcurrentHashMap<>();
 
   /**
    * Creates a new instance of the message bundle. It's usually stored in a private static final field, and static methods delegating
@@ -376,6 +375,11 @@ public class DynamicBundle extends AbstractBundle {
     return Locale.forLanguageTag(ourLangTag);
   }
 
+  @ApiStatus.Internal
+  public static Map<String, ResourceBundle> getResourceBundles() {
+    return Collections.unmodifiableMap(bundles);
+  }
+
   private enum BundleOrder {
     FOLDER_REGION_LEVEL_PLUGIN(0), //localization/zh/CN/
     FOLDER_REGION_LEVEL_PLATFORM(1),
diff --git a/platform/platform-impl/src/com/intellij/openapi/wm/impl/status/ShowBundleMessagesDialogAction.kt b/platform/platform-impl/src/com/intellij/openapi/wm/impl/status/ShowBundleMessagesDialogAction.kt
index a5690dd1e0e4..b94c25115274 100644
--- a/platform/platform-impl/src/com/intellij/openapi/wm/impl/status/ShowBundleMessagesDialogAction.kt
+++ b/platform/platform-impl/src/com/intellij/openapi/wm/impl/status/ShowBundleMessagesDialogAction.kt
@@ -32,7 +32,7 @@ class ShowBundleMessagesDialogAction : AnAction(), DumbAware {
     }
 
     override fun createCenterPanel(): JComponent {
-      val bundleMap = DynamicBundle.bundles
+      val bundleMap = DynamicBundle.getResourceBundles()
       table = JBTable(object : DefaultTableModel(Vector(listOf("Bundle name", "Values")), bundleMap.size) {
         override fun isCellEditable(row: Int, column: Int): Boolean {
           return false