diff --git a/sys/compat/linuxkpi/common/include/linux/jiffies.h b/sys/compat/linuxkpi/common/include/linux/jiffies.h
--- a/sys/compat/linuxkpi/common/include/linux/jiffies.h
+++ b/sys/compat/linuxkpi/common/include/linux/jiffies.h
@@ -40,7 +40,7 @@
 
 #define	jiffies			ticks
 #define	jiffies_64		ticks
-#define	jiffies_to_msecs(x)     (((int64_t)(int)(x)) * 1000 / hz)
+#define	jiffies_to_msecs(x)     ((unsigned int)(((int64_t)(int)(x)) * 1000 / hz))
 
 #define	MAX_JIFFY_OFFSET	((INT_MAX >> 1) - 1)