diff --git a/java/java-impl/src/com/intellij/codeInsight/folding/impl/JavaFoldingBuilder.java b/java/java-impl/src/com/intellij/codeInsight/folding/impl/JavaFoldingBuilder.java
index 7a74b3b31fef..9ec174fdf21c 100644
--- a/java/java-impl/src/com/intellij/codeInsight/folding/impl/JavaFoldingBuilder.java
+++ b/java/java-impl/src/com/intellij/codeInsight/folding/impl/JavaFoldingBuilder.java
@@ -569,7 +569,7 @@ public class JavaFoldingBuilder extends CustomFoldingBuilder implements DumbAwar
     }
   }
 
-  private static boolean hasOnlyOneMethod(@NotNull PsiAnonymousClass anonymousClass, boolean checkResolve) {
+  private static boolean hasOnlyOneLambdaMethod(@NotNull PsiAnonymousClass anonymousClass, boolean checkResolve) {
     PsiField[] fields = anonymousClass.getFields();
     if (fields.length != 0) {
       if (fields.length == 1 && HighlightUtil.SERIAL_VERSION_UID_FIELD_NAME.equals(fields[0].getName()) &&
@@ -590,8 +590,13 @@ public class JavaFoldingBuilder extends CustomFoldingBuilder implements DumbAwar
       return false;
     }
 
+    PsiMethod method = anonymousClass.getMethods()[0];
+    if (method.hasModifierProperty(PsiModifier.SYNCHRONIZED)) {
+      return false;
+    }
+
     if (checkResolve) {
-      PsiReferenceList throwsList = anonymousClass.getMethods()[0].getThrowsList();
+      PsiReferenceList throwsList = method.getThrowsList();
       for (PsiClassType type : throwsList.getReferencedTypes()) {
         if (type.resolve() == null) {
           return false;
@@ -617,7 +622,7 @@ public class JavaFoldingBuilder extends CustomFoldingBuilder implements DumbAwar
         final PsiExpressionList argumentList = expression.getArgumentList();
         if (argumentList != null && argumentList.getExpressions().length == 0) {
           final PsiMethod[] methods = anonymousClass.getMethods();
-          if (hasOnlyOneMethod(anonymousClass, !quick) && (quick || seemsLikeLambda(anonymousClass.getBaseClassType().resolve()))) {
+          if (hasOnlyOneLambdaMethod(anonymousClass, !quick) && (quick || seemsLikeLambda(anonymousClass.getBaseClassType().resolve()))) {
             final PsiMethod method = methods[0];
             final PsiCodeBlock body = method.getBody();
             if (body != null) {
diff --git a/java/java-tests/testSrc/com/intellij/codeInsight/folding/JavaFoldingTest.groovy b/java/java-tests/testSrc/com/intellij/codeInsight/folding/JavaFoldingTest.groovy
index a362c06bff2f..178087bf8e8d 100644
--- a/java/java-tests/testSrc/com/intellij/codeInsight/folding/JavaFoldingTest.groovy
+++ b/java/java-tests/testSrc/com/intellij/codeInsight/folding/JavaFoldingTest.groovy
@@ -283,6 +283,22 @@ class Test {
     assert !foldingModel.getCollapsedRegionAtOffset(text.indexOf("Runnable"))
   }
 
+  public void "test no closure folding for synchronized methods"() {
+    def text = """\
+class Test {
+    void test() { new Runnable() {
+      public synchronized void run() {
+        System.out.println(<caret>);
+      }
+    };
+  }
+}
+"""
+    configure text
+    def foldingModel = myFixture.editor.foldingModel as FoldingModelImpl
+    assert !foldingModel.getCollapsedRegionAtOffset(text.indexOf("Runnable"))
+  }
+
   public void testFindInFolding() {
     def text = """\
 class Test {