diff --git a/include/linux/ac97_codec.h b/include/linux/ac97_codec.h
index c35833824e11..2ed2fd855133 100644
--- a/include/linux/ac97_codec.h
+++ b/include/linux/ac97_codec.h
@@ -259,7 +259,7 @@ struct ac97_codec {
 	int type;
 	u32 model;
 
-	int modem:1;
+	unsigned int modem:1;
 
 	struct ac97_ops *codec_ops;