diff --git a/java/testFramework/src/com/intellij/testFramework/fixtures/LightCodeInsightFixtureTestCase.java b/java/testFramework/src/com/intellij/testFramework/fixtures/LightCodeInsightFixtureTestCase.java
index cff1f8b7d0a9..a82a4f6696ce 100644
--- a/java/testFramework/src/com/intellij/testFramework/fixtures/LightCodeInsightFixtureTestCase.java
+++ b/java/testFramework/src/com/intellij/testFramework/fixtures/LightCodeInsightFixtureTestCase.java
@@ -37,6 +37,14 @@ public abstract class LightCodeInsightFixtureTestCase extends UsefulTestCase {
       myWithAnnotations = withAnnotations;
     }
 
+    @Override
+    public void setUpProject(@NotNull Project project, @NotNull SetupHandler handler) throws Exception {
+      if (myLanguageLevel.isPreview() || myLanguageLevel == LanguageLevel.JDK_X) {
+        AcceptedLanguageLevelsSettings.allowLevel(project, myLanguageLevel);
+      }
+      super.setUpProject(project, handler);
+    }
+
     @Override
     public Sdk getSdk() {
       Sdk jdk = IdeaTestUtil.getMockJdk(myLanguageLevel.toJavaVersion());
@@ -62,21 +70,8 @@ public abstract class LightCodeInsightFixtureTestCase extends UsefulTestCase {
   public static final LightProjectDescriptor JAVA_10 = new ProjectDescriptor(LanguageLevel.JDK_10);
   public static final LightProjectDescriptor JAVA_10_ANNOTATED = new ProjectDescriptor(LanguageLevel.JDK_10, true);
   public static final LightProjectDescriptor JAVA_11 = new ProjectDescriptor(LanguageLevel.JDK_11);
-  public static final LightProjectDescriptor JAVA_12 = new ProjectDescriptor(LanguageLevel.JDK_12_PREVIEW) {
-    @Override
-    public void setUpProject(@NotNull Project project, @NotNull SetupHandler handler) throws Exception {
-      AcceptedLanguageLevelsSettings.allowLevel(project, myLanguageLevel);
-      super.setUpProject(project, handler);
-    }
-
-  };
-  public static final LightProjectDescriptor JAVA_X = new ProjectDescriptor(LanguageLevel.JDK_X) {
-    @Override
-    public void setUpProject(@NotNull Project project, @NotNull SetupHandler handler) throws Exception {
-      AcceptedLanguageLevelsSettings.allowLevel(project, myLanguageLevel);
-      super.setUpProject(project, handler);
-    }
-  };
+  public static final LightProjectDescriptor JAVA_12 = new ProjectDescriptor(LanguageLevel.JDK_12_PREVIEW);
+  public static final LightProjectDescriptor JAVA_X = new ProjectDescriptor(LanguageLevel.JDK_X);
 
   public static final LightProjectDescriptor JAVA_LATEST = new ProjectDescriptor(LanguageLevel.HIGHEST) {
     @Override