diff --git xclock-clean/Clock.c xclock-workdir/Clock.c
index de6beb6..0e92cb6 100644
--- xclock-clean/Clock.c
+++ xclock-workdir/Clock.c
@@ -1281,6 +1281,8 @@ time_millis(struct tm *tm, struct timeval *tv)
 static unsigned long
 time_intervals(unsigned long millis, unsigned long interval)
 {
+    if(!interval)
+    	return millis;
     return (millis + interval / 2) / interval;
 }
 
diff --git xclock-clean/configure.ac xclock-workdir/configure.ac
index 7d9847b..e15fecd 100644
--- xclock-clean/configure.ac
+++ xclock-workdir/configure.ac
@@ -41,8 +41,6 @@ XORG_DEFAULT_OPTIONS
 
 AC_CHECK_FUNCS([strlcpy getpid nl_langinfo])
 
-AM_ICONV
-
 dnl Required dependencies
 PKG_CHECK_MODULES(XCLOCK, [xaw7 xmu x11 xproto >= 7.0.17])
 XCLOCK_LIBS="$XCLOCK_LIBS $LIBICONV"