diff --git a/src/x64/x64_test.go b/src/x64/x64_test.go
index 23f61ef..8216f1a 100644
--- a/src/x64/x64_test.go
+++ b/src/x64/x64_test.go
@@ -8,10 +8,12 @@ import (
 )
 
 func TestX64(t *testing.T) {
-	assert.DeepEqual(t, x64.Call(nil, 1), []byte{0xe8, 0x01, 0x00, 0x00, 0x00})
-	assert.DeepEqual(t, x64.MoveRegisterNumber(nil, 0, 1), []byte{0xb8, 0x01, 0x00, 0x00, 0x00})
-	assert.DeepEqual(t, x64.MoveRegisterNumber(nil, 1, 1), []byte{0xb9, 0x01, 0x00, 0x00, 0x00})
-	assert.DeepEqual(t, x64.Return(nil), []byte{0xc3})
-	assert.DeepEqual(t, x64.Syscall(nil), []byte{0x0f, 0x05})
+	assert.DeepEqual(t, x64.AlignStack(nil), []byte{0x48, 0x83, 0xE4, 0xF0})
+	assert.DeepEqual(t, x64.Call(nil, 1), []byte{0xE8, 0x01, 0x00, 0x00, 0x00})
+	assert.DeepEqual(t, x64.CallAtAddress(nil, 1), []byte{0xFF, 0x15, 0x01, 0x00, 0x00, 0x00})
 	assert.DeepEqual(t, x64.ExtendRAXToRDX(nil), []byte{0x48, 0x99})
+	assert.DeepEqual(t, x64.MoveRegisterNumber(nil, 0, 1), []byte{0xB8, 0x01, 0x00, 0x00, 0x00})
+	assert.DeepEqual(t, x64.MoveRegisterNumber(nil, 1, 1), []byte{0xB9, 0x01, 0x00, 0x00, 0x00})
+	assert.DeepEqual(t, x64.Return(nil), []byte{0xC3})
+	assert.DeepEqual(t, x64.Syscall(nil), []byte{0x0F, 0x05})
 }