diff --git a/compiler/frontend.java/src/org/jetbrains/kotlin/load/java/structure/impl/JavaMemberImpl.java b/compiler/frontend.java/src/org/jetbrains/kotlin/load/java/structure/impl/JavaMemberImpl.java
index 98ec01b2858..03989fb0a0b 100644
--- a/compiler/frontend.java/src/org/jetbrains/kotlin/load/java/structure/impl/JavaMemberImpl.java
+++ b/compiler/frontend.java/src/org/jetbrains/kotlin/load/java/structure/impl/JavaMemberImpl.java
@@ -39,7 +39,7 @@ public abstract class JavaMemberImpl<Psi extends PsiMember> extends JavaElementI
     @Override
     public Name getName() {
         String name = getPsi().getName();
-        assert name != null : "Member must have a name: " + getPsi();
+        assert name != null && Name.isValidIdentifier(name) : "Member must have a name: " + getPsi().getText();
         return Name.identifier(name);
     }