diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index 55eea90ee993f930ba2d5fc07969fd81e817bf7e..92c06b1bb9796e23fbc78063b758042d5bc59d80 100644
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -6,8 +6,8 @@
  */
 
 struct usbmix_dB_map {
-	u32 min;
-	u32 max;
+	int min;
+	int max;
 };
 
 struct usbmix_name_map {