diff --git a/appl/kf/kfd.c b/appl/kf/kfd.c
index e9d2ed4bf..c2edab7a7 100644
--- a/appl/kf/kfd.c
+++ b/appl/kf/kfd.c
@@ -235,7 +235,8 @@ proto (int sock, const char *service)
     if (tk_file.length != 1)
 	snprintf (ccname, sizeof(ccname), "%s", (char *)(tk_file.data));
     else
-	snprintf (ccname, sizeof(ccname), "FILE:/tmp/krb5cc_%u",pwd->pw_uid);
+	snprintf (ccname, sizeof(ccname), "FILE:/tmp/krb5cc_%lu",
+		  (unsigned long)pwd->pw_uid);
 
     status = krb5_cc_resolve (context, ccname, &ccache);
     if (status) {
diff --git a/appl/rsh/rshd.c b/appl/rsh/rshd.c
index cb7625e63..25f04b27f 100644
--- a/appl/rsh/rshd.c
+++ b/appl/rsh/rshd.c
@@ -819,7 +819,8 @@ doit (void)
 	int fd;
  
 	if (!do_unique_tkfile)
-	    snprintf(tkfile,sizeof(tkfile),"FILE:/tmp/krb5cc_%u",pwd->pw_uid);
+	    snprintf(tkfile,sizeof(tkfile),"FILE:/tmp/krb5cc_%lu",
+		     (unsigned long)pwd->pw_uid);
 	else if (*tkfile=='\0') {
 	    snprintf(tkfile,sizeof(tkfile),"FILE:/tmp/krb5cc_XXXXXX");
 	    fd = mkstemp(tkfile+5);
diff --git a/appl/telnet/libtelnet/kerberos5.c b/appl/telnet/libtelnet/kerberos5.c
index 5229b6529..b2ac3065e 100644
--- a/appl/telnet/libtelnet/kerberos5.c
+++ b/appl/telnet/libtelnet/kerberos5.c
@@ -533,7 +533,7 @@ kerberos5_is(Authenticator *ap, unsigned char *data, int cnt)
 	    break;
 
 	snprintf (ccname, sizeof(ccname),
-		  "FILE:/tmp/krb5cc_%u", pwd->pw_uid);
+		  "FILE:/tmp/krb5cc_%lu", (unsigned long)pwd->pw_uid);
 
 	ret = krb5_cc_resolve (context, ccname, &ccache);
 	if (ret) {