diff --git a/py/rest/testing/test_convert.py b/py/rest/testing/test_convert.py
index c450414e3..cd3fa5179 100644
--- a/py/rest/testing/test_convert.py
+++ b/py/rest/testing/test_convert.py
@@ -4,10 +4,10 @@ from py.__.rest.convert import convert_dot, latexformula2png
 datadir = py.magic.autopath().dirpath().join("data")
 
 def setup_module(mod):
-    if not py.path.local.sysfind("gs") or \
-           not py.path.local.sysfind("dot") or \
-           not py.path.local.sysfind("latex"):
-        py.test.skip("ghostscript, graphviz and latex needed")
+    required = 'gs', 'dot', 'latex', 'epstopdf', 
+    for exe in required:
+        if not py.path.local.sysfind(exe):
+            py.test.skip("%r not found, required: %r" %(exe, required))
 
 def test_convert_dot():
     # XXX not really clear that the result is valid pdf/eps
diff --git a/py/rest/testing/test_directive.py b/py/rest/testing/test_directive.py
index 63b02f0b5..87f76adc3 100644
--- a/py/rest/testing/test_directive.py
+++ b/py/rest/testing/test_directive.py
@@ -30,8 +30,9 @@ class TestGraphviz(object):
         png.remove()
         
     def _graphviz_pdf(self):
-        if not py.path.local.sysfind("dot") or not py.path.local.sysfind("latex"):
-            py.test.skip("graphviz and latex needed")
+        for exe in 'dot latex epstopdf'.split():
+            if  not py.path.local.sysfind(exe):
+                py.test.skip("%r needed" %(exe,))
 
         directive.set_backend_and_register_directives("latex")
         txt = py.path.local(datadir.join("graphviz.txt"))