diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 013437f845e0..7a6b4ec3a699 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1860,12 +1860,15 @@ static void cleanup_dmi_name(char *name)
 
 /*
  * Check if a DMI field is valid, i.e. not containing any string
- * in the black list.
+ * in the black list and not the empty string.
  */
 static int is_dmi_valid(const char *field)
 {
 	int i = 0;
 
+	if (!field[0])
+		return 0;
+
 	while (dmi_blacklist[i]) {
 		if (strstr(field, dmi_blacklist[i]))
 			return 0;