diff --git a/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightMethodUtil.java b/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightMethodUtil.java
index 8a92a32b045e..18636b1bad28 100644
--- a/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightMethodUtil.java
+++ b/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightMethodUtil.java
@@ -1134,8 +1134,13 @@ public class HighlightMethodUtil {
         description = JavaErrorMessages.message("extension.method.should.have.a.body");
         additionalFixes.add(QUICK_FIX_FACTORY.createAddMethodBodyFix(method));
       }
-      else if (isInterface && isStatic && languageLevel.isAtLeast(LanguageLevel.JDK_1_8)) {
-        description = "Static methods in interfaces should have a body";
+      else if (isInterface) {
+        if (isStatic && languageLevel.isAtLeast(LanguageLevel.JDK_1_8)) {
+          description = "Static methods in interfaces should have a body";
+        }
+        else if (isPrivate && languageLevel.isAtLeast(LanguageLevel.JDK_1_9)) {
+          description = "Private methods in interfaces should have a body";
+        }
       }
     }
     else if (isInterface) {
diff --git a/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightUtil.java b/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightUtil.java
index d7f3e81c0c37..ba8f65738451 100644
--- a/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightUtil.java
+++ b/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightUtil.java
@@ -123,7 +123,7 @@ public class HighlightUtil extends HighlightUtilBase {
     ourMethodIncompatibleModifiers.put(PsiModifier.PUBLIC, ContainerUtil.newTroveSet(PsiModifier.PACKAGE_LOCAL, PsiModifier.PRIVATE, PsiModifier.PROTECTED));
     ourMethodIncompatibleModifiers.put(PsiModifier.PROTECTED, ContainerUtil.newTroveSet(PsiModifier.PACKAGE_LOCAL, PsiModifier.PUBLIC, PsiModifier.PRIVATE));
     ourMethodIncompatibleModifiers.put(PsiModifier.STATIC, ContainerUtil.newTroveSet(PsiModifier.ABSTRACT, PsiModifier.DEFAULT, PsiModifier.FINAL));
-    ourMethodIncompatibleModifiers.put(PsiModifier.DEFAULT, ContainerUtil.newTroveSet(PsiModifier.ABSTRACT, PsiModifier.STATIC, PsiModifier.FINAL));
+    ourMethodIncompatibleModifiers.put(PsiModifier.DEFAULT, ContainerUtil.newTroveSet(PsiModifier.ABSTRACT, PsiModifier.STATIC, PsiModifier.FINAL, PsiModifier.PRIVATE));
     ourMethodIncompatibleModifiers.put(PsiModifier.SYNCHRONIZED, ContainerUtil.newTroveSet(PsiModifier.ABSTRACT));
     ourMethodIncompatibleModifiers.put(PsiModifier.STRICTFP, ContainerUtil.newTroveSet(PsiModifier.ABSTRACT));
     ourMethodIncompatibleModifiers.put(PsiModifier.FINAL, ContainerUtil.newTroveSet(PsiModifier.ABSTRACT));
diff --git a/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting9/PrivateInInterfaces.java b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting9/PrivateInInterfaces.java
index 280cb8a6cab3..3658d0726b59 100644
--- a/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting9/PrivateInInterfaces.java
+++ b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting9/PrivateInInterfaces.java
@@ -1,3 +1,15 @@
 interface A {
     private void m() {}
+}
+
+interface B {
+    <error descr="Private methods in interfaces should have a body">private void m()</error>;
+}
+
+interface C {
+    private <error descr="Illegal combination of modifiers: 'default' and 'private'">default</error> void m() {}
+}
+
+interface D {
+    private static void m() {}
 }
\ No newline at end of file