diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c
index 44d8a95..2c10252 100644
--- a/sound/soc/codecs/adau1701.c
+++ b/sound/soc/codecs/adau1701.c
@@ -91,7 +91,7 @@
 #define ADAU1701_OSCIPOW_OPD		0x04
 #define ADAU1701_DACSET_DACINIT		1
 
-#define ADAU1707_CLKDIV_UNSET		(-1UL)
+#define ADAU1707_CLKDIV_UNSET		(-1U)
 
 #define ADAU1701_FIRMWARE "adau1701.bin"