diff --git a/tests/z80/test_sdc.fs b/tests/z80/test_sdc.fs
index 3abb027..5903bd3 100644
--- a/tests/z80/test_sdc.fs
+++ b/tests/z80/test_sdc.fs
@@ -1,9 +1,5 @@
 212 LOAD ( z80a )
-: SPI_DATA 4 ;
-: SPI_CTL 5 ;
-: SDC_DEVID 1 ;
-596 LOAD ( spi )
-423 436 LOADR ( sdc )
+423 LOAD ( sdc's _crc16 )
 
 0x0000 0x00 _crc16 0x0000 #eq
 0x0000 0x01 _crc16 0x1021 #eq