diff --git a/graphviz-gd_png_check_sig.patch b/graphviz-gd_png_check_sig.patch
new file mode 100644
index 0000000..a5973c9
--- /dev/null
+++ b/graphviz-gd_png_check_sig.patch
@@ -0,0 +1,11 @@
+--- lib/gd/gd_png.c
++++ lib/gd/gd_png.c
+@@ -150,7 +150,7 @@
+ 	return NULL;
+   }
+ 
+-	if (!png_check_sig (sig, 8)) { /* bad signature */
++	if (png_sig_cmp (sig, 0, 8)) { /* bad signature */
+     	return NULL;		/* bad signature */
+ 	}
+ 
diff --git a/graphviz.changes b/graphviz.changes
index 6cc356a..7ddd22c 100644
--- a/graphviz.changes
+++ b/graphviz.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sun Apr  4 18:47:39 CEST 2010 - ro@suse.de
+
+- fix build of gd library with new libpng14
+  (should use system gd lib ?) 
+
 -------------------------------------------------------------------
 Tue Mar 16 18:52:54 CET 2010 - ro@suse.de
 
diff --git a/graphviz.spec b/graphviz.spec
index 6e36909..cd2030c 100644
--- a/graphviz.spec
+++ b/graphviz.spec
@@ -35,6 +35,7 @@ Patch0:         graphviz-fix-pkgIndex.patch
 Patch3:         graphviz-neato_splines.patch
 Patch11:        graphviz-2.20.2-interpreter_names.patch
 Patch13:        graphviz-stddefs.patch
+Patch14:        graphviz-gd_png_check_sig.patch
 Url:            http://www.graphviz.org/
 License:        IBM Public License ..
 Prefix:         /usr
@@ -90,6 +91,7 @@ Authors:
 %patch3
 %patch11
 %patch13
+%patch14
 # Fix path in generated man pages
 sed -e 's$@LIB_DIR@$%{_libdir}$g' tclpkg/gv/gv_doc_langs.tcl >tclpkg/gv/gv_doc_langs.tcl.new && mv tclpkg/gv/gv_doc_langs.tcl.new tclpkg/gv/gv_doc_langs.tcl
 # remove broken macros