diff --git a/src/machine/m_xt_zenith.c b/src/machine/m_xt_zenith.c
index 0e0f9b9b0..0da091917 100644
--- a/src/machine/m_xt_zenith.c
+++ b/src/machine/m_xt_zenith.c
@@ -112,12 +112,8 @@ static const device_t zenith_scratchpad_device = {
 void
 machine_zenith_init(const machine_t *model)
 {
-
     machine_common_init(model);
 
-    if (fdc_type == FDC_INTERNAL)
-        device_add(&fdc_xt_device);
-
     device_add(&zenith_scratchpad_device);
 
     pit_devs[0].set_out_func(pit_devs[0].data, 1, pit_refresh_timer_xt);
@@ -144,6 +140,9 @@ machine_xt_z184_init(const machine_t *model)
 
     machine_zenith_init(model);
 
+    if (fdc_type == FDC_INTERNAL)
+        device_add(&fdc_xt_device);
+
     lpt1_remove(); /* only one parallel port */
     lpt2_remove();
     lpt1_init(0x278);
@@ -171,6 +170,9 @@ machine_xt_z151_init(const machine_t *model)
 
     machine_zenith_init(model);
 
+    if (fdc_type == FDC_INTERNAL)
+        device_add(&fdc_xt_tandy_device);
+
     return ret;
 }
 
@@ -191,6 +193,9 @@ machine_xt_z159_init(const machine_t *model)
 
     machine_zenith_init(model);
 
+    if (fdc_type == FDC_INTERNAL)
+        device_add(&fdc_xt_tandy_device);
+
     /* parallel port is on the memory board */
     lpt1_remove(); /* only one parallel port */
     lpt2_remove();