diff --git a/setup.py b/setup.py
index d243eaa..98099bc 100755
--- a/setup.py
+++ b/setup.py
@@ -192,8 +192,6 @@ def _add_rpath(settings, path):
     """
     if sys.platform == 'darwin':
         settings['extra_link_args'].extend(['-Wl,-rpath','-Wl,%s' % path])
-    else:
-        settings['runtime_library_dirs'].append(path)
 
 def settings_from_prefix(prefix=None, bundle_libzmq_dylib=False):
     """load appropriate library/include settings from ZMQ prefix"""