diff --git a/lib/utils.c b/lib/utils.c
index f77be1fd..c102add7 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -31,7 +31,6 @@
 #include <time.h>
 #include <sys/time.h>
 #include <errno.h>
-#include <ctype.h>
 
 #include "rt_names.h"
 #include "utils.h"