diff --git a/jna.spec b/jna.spec
index e470ec6..5084a42 100644
--- a/jna.spec
+++ b/jna.spec
@@ -1,6 +1,6 @@
 Name:           jna
 Version:        3.2.4
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Pure Java access to native libraries
 
 Group:          Development/Libraries
@@ -20,6 +20,9 @@ Patch1:         jna-3.2.4-loadlibrary.patch
 # and using a complex API like X11 through JNA just increases the potential
 # for problems.
 Patch2:         jna-3.2.4-tests-headless.patch
+# Upstream appears to have some sort of MD5 check on the contents of their
+# native jar.  Carve that out so we always build it.
+Patch3:         jna-3.2.4-build-md5.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  java-devel >= 1.6 ant jpackage-utils ant-nodeps
@@ -66,6 +69,7 @@ This package contains the examples for %{name}.
 %setup -q -n %{name}-%{version}
 sed -e 's|@JNIPATH@|%{_libdir}/%{name}|' %{PATCH1} | patch -p1
 %patch2 -p1 -b .tests-headless
+%patch3 -p0 -R -b .md5
 
 # all java binaries must be removed from the sources
 find . -name '*.jar' -exec rm -f '{}' \;
@@ -128,6 +132,9 @@ rm -rf %{buildroot}
 
 
 %changelog
+* Wed Apr 21 2010 Colin Walters <walters@verbum.org> - 3.2.4-4
+- Fix the build by removing upstream's hardcoded md5
+
 * Thu Dec 17 2009 Levente Farkas <lfarkas@lfarkas.org> - 3.2.4-3
 - add proper ExclusiveArch