diff --git a/usr.bin/top/machine.c b/usr.bin/top/machine.c
index 88d533d3e37..27331be0270 100644
--- a/usr.bin/top/machine.c
+++ b/usr.bin/top/machine.c
@@ -304,7 +304,7 @@ machine_init(struct statics *statics)
 {
 	int i, j, empty, pagesize;
 	uint64_t arc_size;
-	bool carc_en;
+	int carc_en;
 	size_t size;
 
 	size = sizeof(smpmode);