diff --git a/test/gdbm/test_gdbm.rb b/test/gdbm/test_gdbm.rb
index 7f7ab6aab9..39f87d7d8a 100644
--- a/test/gdbm/test_gdbm.rb
+++ b/test/gdbm/test_gdbm.rb
@@ -164,7 +164,7 @@ if defined? GDBM
       open_db_child(dbname) do
         assert_raise(Errno::EWOULDBLOCK, Errno::EAGAIN, Errno::EACCES) {
           GDBM.open(dbname, 0644) {|gdbm|
-            assert_instance_of(GDBM, gdbm)
+            assert(false)
           }
         }
       end
diff --git a/test/ruby/test_array.rb b/test/ruby/test_array.rb
index 6f4999386f..8cf899cc56 100644
--- a/test/ruby/test_array.rb
+++ b/test/ruby/test_array.rb
@@ -735,7 +735,7 @@ class TestArray < Test::Unit::TestCase
     a = @cls[]
     i = 0
     a.each { |e|
-      assert_equal(a[i], e)
+      assert(false, "Never get here")
       i += 1
     }
     assert_equal(0, i)
@@ -755,7 +755,7 @@ class TestArray < Test::Unit::TestCase
     a = @cls[]
     i = 0
     a.each_index { |ind|
-      assert_equal(i, ind)
+      assert(false, "Never get here")
       i += 1
     }
     assert_equal(0, i)