diff --git a/dhcp-4.1.0-lease-file-semicolons.patch b/dhcp-4.1.0-lease-file-semicolons.patch
new file mode 100644
index 0000000..87962c3
--- /dev/null
+++ b/dhcp-4.1.0-lease-file-semicolons.patch
@@ -0,0 +1,55 @@
+diff -up dhcp-4.1.0/client/dhclient.c.semicolons dhcp-4.1.0/client/dhclient.c
+--- dhcp-4.1.0/client/dhclient.c.semicolons	2008-06-11 10:17:10.000000000 -1000
++++ dhcp-4.1.0/client/dhclient.c	2009-08-04 17:46:38.000000000 -1000
+@@ -2780,7 +2780,7 @@ write_client6_lease(struct client_state 
+ 			if (addr->options != NULL)
+ 				write_options(client, addr->options, "      ");
+ 
+-			stat = fprintf(leaseFile, "    }\n");
++			stat = fprintf(leaseFile, "    };\n");
+ 			if (stat <= 0)
+ 				return ISC_R_IOERROR;
+ 		}
+@@ -2788,7 +2788,7 @@ write_client6_lease(struct client_state 
+ 		if (ia->options != NULL)
+ 			write_options(client, ia->options, "    ");
+ 
+-		stat = fprintf(leaseFile, "  }\n");
++		stat = fprintf(leaseFile, "  };\n");
+ 		if (stat <= 0)
+ 			return ISC_R_IOERROR;
+ 	}
+@@ -2802,7 +2802,7 @@ write_client6_lease(struct client_state 
+ 	if (lease->options != NULL)
+ 		write_options(client, lease->options, "  ");
+ 
+-	stat = fprintf(leaseFile, "}\n");
++	stat = fprintf(leaseFile, "};\n");
+ 	if (stat <= 0)
+ 		return ISC_R_IOERROR;
+ 
+@@ -2926,20 +2926,20 @@ int write_client_lease (client, lease, r
+ 
+ 	tval = print_time(lease->renewal);
+ 	if (tval == NULL ||
+-	    fprintf(leaseFile, "  renew %s\n", tval) < 0)
++	    fprintf(leaseFile, "  renew %s;\n", tval) < 0)
+ 		errors++;
+ 
+ 	tval = print_time(lease->rebind);
+ 	if (tval == NULL ||
+-	    fprintf(leaseFile, "  rebind %s\n", tval) < 0)
++	    fprintf(leaseFile, "  rebind %s;\n", tval) < 0)
+ 		errors++;
+ 
+ 	tval = print_time(lease->expiry);
+ 	if (tval == NULL ||
+-	    fprintf(leaseFile, "  expire %s\n", tval) < 0)
++	    fprintf(leaseFile, "  expire %s;\n", tval) < 0)
+ 		errors++;
+ 
+-	if (fprintf(leaseFile, "}\n") < 0)
++	if (fprintf(leaseFile, "};\n") < 0)
+ 		errors++;
+ 
+ 	if (fflush(leaseFile) != 0)
diff --git a/dhcp.spec b/dhcp.spec
index a0392ef..4f4ef14 100644
--- a/dhcp.spec
+++ b/dhcp.spec
@@ -10,7 +10,7 @@
 Summary:  Dynamic host configuration protocol software
 Name:     dhcp
 Version:  4.1.0
-Release:  23%{?dist}
+Release:  24%{?dist}
 # NEVER CHANGE THE EPOCH on this package.  The previous maintainer (prior to
 # dcantrell maintaining the package) made incorrect use of the epoch and
 # that's why it is at 12 now.  It should have never been used, but it was.
@@ -47,6 +47,7 @@ Patch17:  %{name}-4.1.0-invalid-dhclient-conf.patch
 Patch18:  %{name}-4.1.0-missing-ipv6-not-fatal.patch
 Patch19:  %{name}-4.1.0-IFNAMSIZ.patch
 Patch20:  %{name}-4.1.0-add_timeout_when_NULL.patch
+Patch21:  %{name}-4.1.0-lease-file-semicolons.patch
 
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires: autoconf
@@ -199,6 +200,9 @@ libdhcpctl and libomapi static libraries are also included in this package.
 # (Submitted to dhcp-bugs@isc.org - [ISC-Bugs #19867])
 %patch20 -p1
 
+# Add missing semicolons to lines in the client lease file (#514828)
+%patch21 -p1
+
 # Copy in documentation and example scripts for LDAP patch to dhcpd
 %{__install} -p -m 0755 ldap-for-dhcp-%{ldappatchver}/dhcpd-conf-to-ldap contrib/
 
@@ -444,6 +448,9 @@ fi
 %attr(0644,root,root) %{_mandir}/man3/omapi.3.gz
 
 %changelog
+* Tue Aug 04 2009 David Cantrell <dcantrell@redhat.com> - 12:4.1.0-24
+- Correct lease file format written by dhclient (#514828)
+
 * Thu Jul 02 2009 David Cantrell <dcantrell@redhat.com> - 12:4.1.0-23
 - Correct problems when upgrading from a previous release and your
   dhcpd.conf file not being placed in /etc/dhcp (#506600)