diff --git a/src/disk/hdc_st506_xt.c b/src/disk/hdc_st506_xt.c
index 94d59091b..e42516c3f 100644
--- a/src/disk/hdc_st506_xt.c
+++ b/src/disk/hdc_st506_xt.c
@@ -1733,6 +1733,12 @@ xebec_available(void)
     return (rom_present(XEBEC_BIOS_FILE));
 }
 
+static int
+wdxt_available(void)
+{
+    return (rom_present(WDXT_GEN_BIOS_FILE));
+}
+
 static int
 dtc5150x_available(void)
 {
@@ -2147,7 +2153,7 @@ const device_t st506_xt_wdxt_gen_device = {
     .init          = st506_init,
     .close         = st506_close,
     .reset         = NULL,
-    { .available = xebec_available },
+    { .available = wdxt_available },
     .speed_changed = NULL,
     .force_redraw  = NULL,
     .config        = NULL