diff --git a/libmisc/utmp.c b/libmisc/utmp.c
index aad68340..ded2b5ad 100644
--- a/libmisc/utmp.c
+++ b/libmisc/utmp.c
@@ -72,7 +72,7 @@ struct utmp utent;
 
 #if defined(__linux__)		/* XXX */
 
-void checkutmp (int picky)
+void checkutmp (bool picky)
 {
 	char *line;
 	struct utmp *ut;