diff --git a/usr.sbin/bhyve/pci_hda.c b/usr.sbin/bhyve/pci_hda.c
index 07b0e745b0b..4fc19c52b72 100644
--- a/usr.sbin/bhyve/pci_hda.c
+++ b/usr.sbin/bhyve/pci_hda.c
@@ -324,7 +324,7 @@ hda_init(nvlist_t *nvl)
 	int err;
 
 #if DEBUG_HDA == 1
-	dbg = fopen("/tmp/bhyve_hda.log", "w+");
+	dbg = fopen(DEBUG_HDA_FILE, "w+");
 #endif
 
 	sc = calloc(1, sizeof(*sc));
diff --git a/usr.sbin/bhyve/pci_hda.h b/usr.sbin/bhyve/pci_hda.h
index 8b24afac477..ce502278bdb 100644
--- a/usr.sbin/bhyve/pci_hda.h
+++ b/usr.sbin/bhyve/pci_hda.h
@@ -51,6 +51,9 @@ extern FILE *dbg;
 #define DPRINTF(fmt, arg...)						\
 do {fprintf(dbg, "%s-%d: " fmt "\n", __func__, __LINE__, ##arg);		\
 fflush(dbg); } while (0)
+#ifndef DEBUG_HDA_FILE
+#define DEBUG_HDA_FILE "/tmp/bhyve_hda.log"
+#endif
 #else
 #define DPRINTF(fmt, arg...)
 #endif