diff --git a/tree_structure_provider/src/main/java/org/intellij/sdk/tree_structure_provider/TextOnlyTreeStructureProvider.java b/tree_structure_provider/src/main/java/org/intellij/sdk/treeStructureProvider/TextOnlyTreeStructureProvider.java
similarity index 96%
rename from tree_structure_provider/src/main/java/org/intellij/sdk/tree_structure_provider/TextOnlyTreeStructureProvider.java
rename to tree_structure_provider/src/main/java/org/intellij/sdk/treeStructureProvider/TextOnlyTreeStructureProvider.java
index 22635d661..bc114616e 100644
--- a/tree_structure_provider/src/main/java/org/intellij/sdk/tree_structure_provider/TextOnlyTreeStructureProvider.java
+++ b/tree_structure_provider/src/main/java/org/intellij/sdk/treeStructureProvider/TextOnlyTreeStructureProvider.java
@@ -1,6 +1,6 @@
 // Copyright 2000-2020 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 org.intellij.sdk.tree_structure_provider;
+package org.intellij.sdk.treeStructureProvider;
 
 import com.intellij.ide.projectView.*;
 import com.intellij.ide.projectView.impl.nodes.PsiFileNode;
diff --git a/tree_structure_provider/src/main/resources/META-INF/plugin.xml b/tree_structure_provider/src/main/resources/META-INF/plugin.xml
index aa3ba1c25..451ee492e 100644
--- a/tree_structure_provider/src/main/resources/META-INF/plugin.xml
+++ b/tree_structure_provider/src/main/resources/META-INF/plugin.xml
@@ -3,7 +3,7 @@
 <idea-plugin>
 
   <!--  Unique id for this plugin. Must stay constant for the life of the plugin.  -->
-  <id>org.intellij.sdk.tree_structure_provider</id>
+  <id>org.intellij.sdk.treeStructureProvider</id>
 
   <!-- Text to display as name on Preferences/Settings | Plugin page  -->
   <name>SDK: Tree Structure Provider Sample Project</name>
@@ -37,7 +37,7 @@
   <vendor url="https://plugins.jetbrains.com">IntelliJ Platform SDK</vendor>
 
   <extensions defaultExtensionNs="com.intellij">
-    <treeStructureProvider implementation="org.intellij.sdk.tree_structure_provider.TextOnlyTreeStructureProvider"/>
+    <treeStructureProvider implementation="org.intellij.sdk.treeStructureProvider.TextOnlyTreeStructureProvider"/>
   </extensions>
 
 </idea-plugin>