diff --git a/scripts/hiddenapi/signature_trie.py b/scripts/hiddenapi/signature_trie.py
index 3650fa1..2ff0c5f 100644
--- a/scripts/hiddenapi/signature_trie.py
+++ b/scripts/hiddenapi/signature_trie.py
@@ -150,10 +150,6 @@
                                 f"wildcard '{last_element}' and "
                                 f"member signature '{member[0]}'")
             wildcard = [last_element]
-        elif last_element.islower():
-            raise Exception(f"Invalid signature '{signature}': last element "
-                            f"'{last_element}' is lower case but should be an "
-                            f"upper case class name or wildcard")
         else:
             packages = elements[0:-1]
             # Split the class name into outer / inner classes
diff --git a/scripts/hiddenapi/signature_trie_test.py b/scripts/hiddenapi/signature_trie_test.py
index 6d4e660..bd4a9a8 100755
--- a/scripts/hiddenapi/signature_trie_test.py
+++ b/scripts/hiddenapi/signature_trie_test.py
@@ -117,14 +117,6 @@
         self.assertEqual(elements, self.signature_to_elements(signature))
         self.assertEqual(signature, self.elements_to_signature(elements))
 
-    def test_invalid_no_class_or_wildcard(self):
-        signature = "java/lang"
-        with self.assertRaises(Exception) as context:
-            self.signature_to_elements(signature)
-        self.assertIn(
-            "last element 'lang' is lower case but should be an "
-            "upper case class name or wildcard", str(context.exception))
-
     def test_non_standard_class_name(self):
         elements = [
             ("package", "javax"),