-#define msg_button_on "PCI slot #%d - powering on due to button press.\n"
-#define msg_button_off "PCI slot #%d - powering off due to button press.\n"
-#define msg_button_cancel "PCI slot #%d - action canceled due to button press.\n"
+#define msg_button_on "PCI slot #%s - powering on due to button press.\n"
+#define msg_button_off "PCI slot #%s - powering off due to button press.\n"
+#define msg_button_cancel "PCI slot #%s - action canceled due to button press.\n"