diff --git a/sys/kern/kern_intr.c b/sys/kern/kern_intr.c
index d6de6111bb1f..a8d9f1a29e63 100644
--- a/sys/kern/kern_intr.c
+++ b/sys/kern/kern_intr.c
@@ -362,8 +362,7 @@ intr_setaffinity(int irq, void *m)
 {
 	struct intr_event *ie;
 	cpuset_t *mask;
-	u_char cpu;
-	int n;
+	int cpu, n;
 
 	mask = m;
 	cpu = NOCPU;
@@ -377,7 +376,7 @@ intr_setaffinity(int irq, void *m)
 				continue;
 			if (cpu != NOCPU)
 				return (EINVAL);
-			cpu = (u_char)n;
+			cpu = n;
 		}
 	}
 	ie = intr_lookup(irq);