diff -ru tclock-1.0.1/tclock.c tclock-1.0.1.new/tclock.c
--- tclock-1.0.1/tclock.c	2006-11-17 13:51:48 +0300
+++ tclock-1.0.1.new/tclock.c	2006-11-17 13:53:22 +0300
@@ -33,6 +33,7 @@
 #include <X11/extensions/shape.h>
 #include <signal.h>
 #include <errno.h>
+#include <ctype.h>
 #include "defaults.h"
 
 #define HOURHAND	0
@@ -238,7 +239,7 @@
   times = *localtime(&lclock);
   times.tm_hour = times.tm_hour * 5 + times.tm_min / 12;
   reshape();
-  signal(SIGALRM, (void *)sigalrm);		/* For SysV lusers */
+  return 0;
 }
 
 unsigned long
@@ -295,7 +296,7 @@
   strcpy(appClass, "Tclock");
 }
 
-void
+int 
 main(ac, av)
   int ac;
   char **av;
@@ -311,7 +312,8 @@
   char		*getenv();
   char		*displayName, fn[1000];
   char		*sdb;
-  int		parseReturn, rc;
+  int		parseReturn;
+  sigset_t	mask;
 
   XrmParseCommand(&db, option, numOptions, "tclock", &ac, av);
   if(ac>1)
@@ -420,6 +422,9 @@
   new.it_value.tv_usec = 0;
   setitimer(ITIMER_REAL, &new, &old);
 
+  sigemptyset(&mask);
   for(;;)
-    sigpause(0);
+    sigsuspend(&mask);
+  
+  return 0;
 }