diff --git a/py65/tests/test_assembler.py b/py65/tests/test_assembler.py
index fa3a4ae..4c3be7c 100644
--- a/py65/tests/test_assembler.py
+++ b/py65/tests/test_assembler.py
@@ -175,9 +175,6 @@ class AssemblerTests(unittest.TestCase):
         self.assertEqual([0x26, 0x44],
                          self.assemble('ROL $44'))
 
-    def dont_test_assembles_23(self):
-        pass
-
     def dont_test_assembles_27(self):
         pass
 
@@ -490,11 +487,6 @@ class AssemblerTests(unittest.TestCase):
         self.assertEqual([0x7c, 0x34, 0x12],
                          self.assemble('JMP ($1234,X)', 0x0000, mpu))
 
-    def test_assembles_07_65c02(self):
-        mpu = MPU65C02()
-        self.assertEqual([0x07, 0x42],
-                         self.assemble('RMB0 $42', 0x0000, mpu))
-
     def test_assembles_7d(self):
         self.assertEqual([0x7d, 0x00, 0x44],
                          self.assemble('ADC $4400,X'))
@@ -650,7 +642,7 @@ class AssemblerTests(unittest.TestCase):
     def dont_test_assembles_a7(self):
         pass
 
-    def test_assembles_a9(self):
+    def test_assembles_a8(self):
         self.assertEqual([0xa8],
                          self.assemble('TAY'))
 
diff --git a/py65/tests/test_monitor.py b/py65/tests/test_monitor.py
index c5ad5b1..8aeb0ea 100644
--- a/py65/tests/test_monitor.py
+++ b/py65/tests/test_monitor.py
@@ -378,16 +378,6 @@ class MonitorTests(unittest.TestCase):
         out = stdout.getvalue()
         self.assertTrue(out.startswith('Wrote +1 bytes from $c000 to $c000'))
 
-    def test_do_fill_will_fill_one_address(self):
-        stdout = StringIO()
-        mon = Monitor(stdout=stdout)
-        mon._mpu.memory[0xc000] = 0x00
-        mon.do_fill('c000 aa')
-
-        self.assertEqual(0xAA, mon._mpu.memory[0xc000])
-        out = stdout.getvalue()
-        self.assertTrue(out.startswith('Wrote +1 bytes from $c000 to $c000'))
-
     def test_do_fill_will_fill_an_address_range_with_a_single_byte(self):
         stdout = StringIO()
         mon = Monitor(stdout=stdout)