diff --git a/plugins/devkit/testData/codeInsight/MyExtBean.java b/plugins/devkit/testData/codeInsight/MyExtBean.java
new file mode 100644
index 000000000000..5c8a9f14140f
--- /dev/null
+++ b/plugins/devkit/testData/codeInsight/MyExtBean.java
@@ -0,0 +1,8 @@
+public class MyExtBean {
+  @java.lang.Deprecated
+  @com.intellij.util.xmlb.annotations.Attribute("old")
+  public String myOld;
+
+  @com.intellij.util.xmlb.annotations.Attribute("attr")
+  public String myAttr;
+}
\ No newline at end of file
diff --git a/plugins/devkit/testData/codeInsight/deprecatedExtensionAttribute.xml b/plugins/devkit/testData/codeInsight/deprecatedExtensionAttribute.xml
new file mode 100644
index 000000000000..6ea4867e4bdf
--- /dev/null
+++ b/plugins/devkit/testData/codeInsight/deprecatedExtensionAttribute.xml
@@ -0,0 +1,12 @@
+<idea-plugin>
+  <id>com.intellij.myPlugin</id>
+
+  <extensionPoints>
+    <extensionPoint name="myExt" beanClass="MyExtBean"/>
+  </extensionPoints>
+
+  <extensions defaultExtensionNs="com.intellij.myPlugin">
+    <myExt <warning descr="'myOld' is deprecated">old</warning>="java.lang.Runnable" attr="value"/>
+  </extensions>
+
+</idea-plugin>
\ No newline at end of file
diff --git a/plugins/devkit/testSources/codeInsight/PluginXmlFunctionalTest.java b/plugins/devkit/testSources/codeInsight/PluginXmlFunctionalTest.java
index b3b515a2e4a9..a50c4c59e01a 100644
--- a/plugins/devkit/testSources/codeInsight/PluginXmlFunctionalTest.java
+++ b/plugins/devkit/testSources/codeInsight/PluginXmlFunctionalTest.java
@@ -28,6 +28,7 @@ import com.intellij.testFramework.fixtures.JavaCodeInsightFixtureTestCase;
 import com.intellij.testFramework.fixtures.TempDirTestFixture;
 import com.intellij.usageView.UsageViewNodeTextLocation;
 import com.intellij.usageView.UsageViewTypeLocation;
+import com.intellij.util.xml.DeprecatedClassUsageInspection;
 import org.jetbrains.idea.devkit.DevKitInspectionToolProvider;
 
 import java.io.IOException;
@@ -65,7 +66,7 @@ public class PluginXmlFunctionalTest extends JavaCodeInsightFixtureTestCase {
                            "    </extensionPoints>\n" +
                            "</idea-plugin>");
 
-    myFixture.configureFromExistingVirtualFile(myFixture.copyFileToProject(getTestName(false) + ".xml", "META-INF/plugin.xml"));
+    configureByFile();
     myFixture.checkHighlighting(false, false, false);
   }
 
@@ -79,12 +80,16 @@ public class PluginXmlFunctionalTest extends JavaCodeInsightFixtureTestCase {
                            "    <id>com.intellij.custom</id>\n" +
                            "</idea-plugin>");
 
-    myFixture.configureFromExistingVirtualFile(myFixture.copyFileToProject(getTestName(false) + ".xml", "META-INF/plugin.xml"));
+    configureByFile();
     myFixture.checkHighlighting(false, false, false);
   }
 
-  public void testExtensionQualifiedName() throws Throwable {
+  private void configureByFile() {
     myFixture.configureFromExistingVirtualFile(myFixture.copyFileToProject(getTestName(false) + ".xml", "META-INF/plugin.xml"));
+  }
+
+  public void testExtensionQualifiedName() throws Throwable {
+    configureByFile();
     myFixture.checkHighlighting(false, false, false);
   }
 
@@ -130,6 +135,11 @@ public class PluginXmlFunctionalTest extends JavaCodeInsightFixtureTestCase {
     myFixture.checkResultByFile(getTestName(false) + "_after.xml");
   }
 
+  public void testDeprecatedExtensionAttribute() {
+    myFixture.enableInspections(DeprecatedClassUsageInspection.class);
+    myFixture.testHighlighting("deprecatedExtensionAttribute.xml", "MyExtBean.java");
+  }
+
   public void testPluginModule() throws Throwable {
     myFixture.testHighlighting("pluginWithModules.xml");
   }