diff --git a/libgcrypt-1.4.5-ImplicitDSOLinking.patch b/libgcrypt-1.4.5-ImplicitDSOLinking.patch
new file mode 100644
index 0000000..7b4671f
--- /dev/null
+++ b/libgcrypt-1.4.5-ImplicitDSOLinking.patch
@@ -0,0 +1,24 @@
+diff -up libgcrypt-1.4.5/tests/Makefile.am.ImplicitDSOLinking libgcrypt-1.4.5/tests/Makefile.am
+--- libgcrypt-1.4.5/tests/Makefile.am.ImplicitDSOLinking	2009-04-02 04:25:34.000000000 -0500
++++ libgcrypt-1.4.5/tests/Makefile.am	2010-02-14 14:28:49.792383613 -0600
+@@ -36,7 +36,7 @@ TESTS += benchmark
+ AM_CPPFLAGS = -I../src -I$(top_srcdir)/src
+ AM_CFLAGS = $(GPG_ERROR_CFLAGS)
+ 
+-LDADD = ../src/libgcrypt.la $(DL_LIBS)
++LDADD = ../src/libgcrypt.la $(DL_LIBS) $(GPG_ERROR_LIBS)
+ 
+ EXTRA_PROGRAMS = testapi pkbench
+ noinst_PROGRAMS = $(TESTS) fipsdrv
+diff -up libgcrypt-1.4.5/tests/Makefile.in.ImplicitDSOLinking libgcrypt-1.4.5/tests/Makefile.in
+--- libgcrypt-1.4.5/tests/Makefile.in.ImplicitDSOLinking	2009-12-11 09:43:30.000000000 -0600
++++ libgcrypt-1.4.5/tests/Makefile.in	2010-02-14 14:29:30.232368780 -0600
+@@ -334,7 +334,7 @@ top_srcdir = @top_srcdir@
+ # a built header.
+ AM_CPPFLAGS = -I../src -I$(top_srcdir)/src
+ AM_CFLAGS = $(GPG_ERROR_CFLAGS)
+-LDADD = ../src/libgcrypt.la $(DL_LIBS)
++LDADD = ../src/libgcrypt.la $(DL_LIBS) $(GPG_ERROR_LIBS)
+ EXTRA_DIST = README rsa-16k.key cavs_tests.sh cavs_driver.pl
+ all: all-am
+ 
diff --git a/libgcrypt.spec b/libgcrypt.spec
index f9b6c40..e81f80e 100644
--- a/libgcrypt.spec
+++ b/libgcrypt.spec
@@ -1,6 +1,6 @@
 Name: libgcrypt
 Version: 1.4.5
-Release: 3%{?dist}
+Release: 4%{?dist}
 URL: http://www.gnupg.org/
 Source0: libgcrypt-%{version}-hobbled.tar.bz2
 # The original libgcrypt sources now contain potentially patented ECC
@@ -12,6 +12,8 @@ Source2: wk@g10code.com
 Source3: hobble-libgcrypt
 # make FIPS hmac compatible with fipscheck - non upstreamable
 Patch2: libgcrypt-1.4.4-use-fipscheck.patch
+# fix ImplicitDSOLinking (missing -lgpg-error linkage in tests/), upstreamable
+Patch3: libgcrypt-1.4.5-ImplicitDSOLinking.patch
 
 # Technically LGPLv2.1+, but Fedora's table doesn't draw a distinction.
 # Documentation and some utilities are GPLv2+ licensed. These files
@@ -45,6 +47,7 @@ applications using libgcrypt.
 %setup -q
 %{SOURCE3}
 %patch2 -p1 -b .use-fipscheck
+%patch3 -p1 -b .ImplicitDSOLinking
 
 mv AUTHORS AUTHORS.iso88591
 iconv -f ISO-8859-1 -t UTF-8 AUTHORS.iso88591 >AUTHORS
@@ -156,6 +159,9 @@ exit 0
 %doc COPYING
 
 %changelog
+* Sun Feb 14 2010 Rex Dieter <rdieter@fedoraproject.org> 1.4.5-4
+- FTBFS libgcrypt-1.4.5-3.fc13: ImplicitDSOLinking (#564973)
+
 * Wed Feb  3 2010 Tomas Mraz <tmraz@redhat.com> 1.4.5-3
 - drop the S390 build workaround as it is no longer needed
 - additional spec file cleanups for merge review (#226008)