diff --git a/0001-Fix-decl-of-pe_update-off_t-loff_t.patch b/0001-Fix-decl-of-pe_update-off_t-loff_t.patch
new file mode 100644
index 0000000..96e07ea
--- /dev/null
+++ b/0001-Fix-decl-of-pe_update-off_t-loff_t.patch
@@ -0,0 +1,25 @@
+From be102289d381a1c8f2a5eccdc1bba7bdf7593baa Mon Sep 17 00:00:00 2001
+From: Peter Jones <pjones@redhat.com>
+Date: Thu, 21 Jun 2012 09:45:06 -0400
+Subject: [PATCH] Fix decl of pe_update off_t -> loff_t
+
+---
+ libdpe/pe_update.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libdpe/pe_update.c b/libdpe/pe_update.c
+index ca65bca..15678f6 100644
+--- a/libdpe/pe_update.c
++++ b/libdpe/pe_update.c
+@@ -75,7 +75,7 @@ write_file(Pe *pe, off_t size, size_t shnum)
+ 	return size;
+ }
+ 
+-off_t
++loff_t
+ pe_update(Pe *pe, Pe_Cmd cmd)
+ {
+ 	if (cmd != PE_C_NULL && cmd != PE_C_WRITE && cmd != PE_C_WRITE_MMAP) {
+-- 
+1.7.10.2
+
diff --git a/pesign.spec b/pesign.spec
index 752f952..d1a6782 100644
--- a/pesign.spec
+++ b/pesign.spec
@@ -1,7 +1,7 @@
 Summary: Signing utility for UEFI binaries
 Name: pesign
 Version: 0.2
-Release: 1%{?dist}
+Release: 2%{?dist}
 Group: Development/System
 License: GPLv2
 URL: https://github.com/vathpela/pesign
@@ -13,6 +13,8 @@ BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires: git gnu-efi nspr nspr-devel nss nss-devel nss-util popt-devel
 Requires: nspr nss nss-util popt
 
+Patch0: 0001-Fix-decl-of-pe_update-off_t-loff_t.patch
+
 %description
 This package contains the pesign utility for signing UEFI binaries as
 well as other associated tools.
@@ -48,6 +50,9 @@ rm -rf %{buildroot}
 %attr(0700,root,root) /etc/pki/pesign
 
 %changelog
+* Thu Jun 21 2012 Peter Jones <pjones@redhat.com> - 0.2-2
+- Fix compile problem with f18's compiler.
+
 * Thu Jun 21 2012 Peter Jones <pjones@redhat.com> - 0.2-1
 - Fix some rpmlint complaints nirik pointed out
 - Add popt-devel build dep