diff --git a/java/java-psi-impl/src/com/intellij/psi/scope/util/PsiScopesUtil.java b/java/java-psi-impl/src/com/intellij/psi/scope/util/PsiScopesUtil.java
index c1fce0e27bc0..ad3ff0e15ac2 100644
--- a/java/java-psi-impl/src/com/intellij/psi/scope/util/PsiScopesUtil.java
+++ b/java/java-psi-impl/src/com/intellij/psi/scope/util/PsiScopesUtil.java
@@ -163,6 +163,9 @@ public class PsiScopesUtil {
         PsiType type = null;
         if (qualifier instanceof PsiExpression) {
           type = ((PsiExpression)qualifier).getType();
+          if (type != null) {
+            assert type.isValid() : type.getClass() + "; " + qualifier;
+          }
           processTypeDeclarations(type, ref, processor);
         }