diff --git a/java/java-psi-impl/src/com/intellij/psi/impl/source/tree/java/PsiReferenceExpressionImpl.java b/java/java-psi-impl/src/com/intellij/psi/impl/source/tree/java/PsiReferenceExpressionImpl.java
index d36b06a962c9..7375daa7f057 100644
--- a/java/java-psi-impl/src/com/intellij/psi/impl/source/tree/java/PsiReferenceExpressionImpl.java
+++ b/java/java-psi-impl/src/com/intellij/psi/impl/source/tree/java/PsiReferenceExpressionImpl.java
@@ -370,7 +370,9 @@ public class PsiReferenceExpressionImpl extends PsiReferenceExpressionBase imple
       if (resolve instanceof PsiVariable) {
         PsiType type = ((PsiVariable)resolve).getType();
         ret = type instanceof PsiEllipsisType ? ((PsiEllipsisType)type).toArrayType() : type;
-        LOG.assertTrue(ret == null || ret.isValid());
+        if (ret != null && !ret.isValid()) {
+          LOG.error("invalid type of " + resolve + " of class " + resolve.getClass() + ", valid=" + resolve.isValid());
+        }
         if (resolve instanceof PsiField && !((PsiField)resolve).hasModifierProperty(PsiModifier.STATIC)) {
           owner = ((PsiField)resolve).getContainingClass();
         }