diff --git a/java/java-psi-api/src/com/intellij/psi/util/TypesDistinctProver.java b/java/java-psi-api/src/com/intellij/psi/util/TypesDistinctProver.java
index 1ada9aa5551e..080ef4a3bbe8 100644
--- a/java/java-psi-api/src/com/intellij/psi/util/TypesDistinctProver.java
+++ b/java/java-psi-api/src/com/intellij/psi/util/TypesDistinctProver.java
@@ -126,6 +126,8 @@ public class TypesDistinctProver {
       final PsiClass boundClass1 = PsiUtil.resolveClassInType(extendsBound1);
       final PsiClass boundClass2 = PsiUtil.resolveClassInType(extendsBound2);
       if (boundClass1 != null && boundClass2 != null) {
+        if (extendsBound1 instanceof PsiClassType && extendsBound2 instanceof PsiClassType && 
+            (((PsiClassType)extendsBound1).isRaw() ^ ((PsiClassType)extendsBound2).isRaw())) return true;
         return proveExtendsBoundsDistinct(type1, type2, boundClass1, boundClass2);
       }
       return provablyDistinct(extendsBound1, extendsBound2, 1);
diff --git a/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/IDEA97276.java b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/IDEA97276.java
index c059e83939f2..625d70622fb8 100644
--- a/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/IDEA97276.java
+++ b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/IDEA97276.java
@@ -2,3 +2,16 @@ interface Interf<X extends Interf> {}
 class SomeClass {
     static <I extends Interf<? super I>> Class<I> someMethod(I i) { return null; }
 }
+
+interface OtherInterf<I1 extends Interf, I2 extends Interf> {}
+interface ImmutableSet<S> {}
+
+class SomeOtherClass {
+  static ImmutableSet<Class<? extends OtherInterf<?, ?>>> someOtherMethod() {
+    return <error descr="Inconvertible types; cannot cast 'ImmutableSet<java.lang.Class<? extends OtherInterf>>' to 'ImmutableSet<java.lang.Class<? extends OtherInterf<?,?>>>'">(ImmutableSet<Class<? extends OtherInterf<?, ?>>>)aux(OtherInterf.class)</error>;
+  }
+
+  static <T> ImmutableSet<Class<? extends T>> aux(Class<T> t) {
+    return null;
+  }
+}