diff --git a/asm/test.py b/asm/test.py
index bddf0a3..1f66a4a 100644
--- a/asm/test.py
+++ b/asm/test.py
@@ -185,7 +185,7 @@ class AddTest(unittest.TestCase):
 		self.assertEqual(ex.cenv.reg[0], 30)
 		self.assertEqual(ex.cenv.reg[1], word_2c(10))
 
-	def test_exec_mul_throw_imm(self):
+	def test_exec_add_throw_imm(self):
 		p = Program()
 		with self.assertRaises(TypecheckException) as cm:
 			p.parse_asm_line("add 5 6 7")
@@ -194,16 +194,7 @@ class AddTest(unittest.TestCase):
 		self.assertEqual(cm.exception.i, 0)
 		self.assertEqual(cm.exception.opcode, 3)
 
-	def test_exec_mul_throw_imm(self):
-		p = Program()
-		with self.assertRaises(TypecheckException) as cm:
-			p.parse_asm_line("add 5 6 7")
-		self.assertEqual(cm.exception.argtype, ArgType.REG)
-		self.assertEqual(cm.exception.sarg, '5')
-		self.assertEqual(cm.exception.i, 0)
-		self.assertEqual(cm.exception.opcode, 3)
-
-	def test_exec_mul_throw_lab_1(self):
+	def test_exec_add_throw_lab_1(self):
 		p = Program()
 		with self.assertRaises(TypecheckException) as cm:
 			p.parse_asm_line("add r0 l6 7")
@@ -212,7 +203,7 @@ class AddTest(unittest.TestCase):
 		self.assertEqual(cm.exception.i, 1)
 		self.assertEqual(cm.exception.opcode, 3)
 
-	def test_exec_mul_throw_lab_2(self):
+	def test_exec_add_throw_lab_2(self):
 		p = Program()
 		with self.assertRaises(TypecheckException) as cm:
 			p.parse_asm_line("add r0 12 l24")
@@ -240,6 +231,33 @@ class MulTest(unittest.TestCase):
 		self.assertEqual(ex.cenv.reg[0], word_2c(25))
 		self.assertEqual(ex.cenv.reg[1], 125)
 
+	def test_exec_mul_throw_imm(self):
+		p = Program()
+		with self.assertRaises(TypecheckException) as cm:
+			p.parse_asm_line("mul 942 6 7")
+		self.assertEqual(cm.exception.argtype, ArgType.REG)
+		self.assertEqual(cm.exception.sarg, '942')
+		self.assertEqual(cm.exception.i, 0)
+		self.assertEqual(cm.exception.opcode, 4)
+
+	def test_exec_mul_throw_lab_1(self):
+		p = Program()
+		with self.assertRaises(TypecheckException) as cm:
+			p.parse_asm_line("mul r9 l2 1991")
+		self.assertEqual(cm.exception.argtype, ArgType.VAL)
+		self.assertEqual(cm.exception.sarg, 'l2')
+		self.assertEqual(cm.exception.i, 1)
+		self.assertEqual(cm.exception.opcode, 4)
+
+	def test_exec_mul_throw_lab_2(self):
+		p = Program()
+		with self.assertRaises(TypecheckException) as cm:
+			p.parse_asm_line("mul r0 -11 l48")
+		self.assertEqual(cm.exception.argtype, ArgType.VAL)
+		self.assertEqual(cm.exception.sarg, 'l48')
+		self.assertEqual(cm.exception.i, 2)
+		self.assertEqual(cm.exception.opcode, 4)
+
 class ProgramTest(unittest.TestCase):
 	def test_exec_simple_reg(self):
 		p = Program()