diff --git a/modules/gui/src/gosty.cc b/modules/gui/src/gosty.cc
index 670c454c1886f0c1c2013954d3996a38060781b6..b881e5093bdd168c37c1679fe1e77ffc9af9448c 100644
--- a/modules/gui/src/gosty.cc
+++ b/modules/gui/src/gosty.cc
@@ -117,7 +117,7 @@ void setup_python_search_path(const String& root, PythonInterpreter& pi)
 #  if (defined(__ppc64__) || defined(__x86_64__)) && !defined(__APPLE__)
   pi.AppendModulePath(QString::fromStdString(root+"/lib64/"+
                                              site_pkgs.str()+
-                                             "site-packages"));
+                                             "/site-packages"));
 #  else
   pi.AppendModulePath(QString::fromStdString(root+"/lib/"+
                                              site_pkgs.str()+
diff --git a/scripts/ost_config.in b/scripts/ost_config.in
index fe0d9e84169e64a7225c3bd135c4f3c63334df02..f756d7cd30c29db720aeba659643c18bb872e4c9 100644
--- a/scripts/ost_config.in
+++ b/scripts/ost_config.in
@@ -30,7 +30,6 @@ export PATH="$DNG_BINDIR:${PATH}"
 export DYLD_FRAMEWORK_PATH="$DNG_LIBDIR:${DYLD_FRAMEWORK_PATH}"
 export DYLD_LIBRARY_PATH="$DNG_LIBDIR:${DYLD_LIBRARY_PATH}"
 export LD_LIBRARY_PATH="$DNG_LIBDIR:${LD_LIBRARY_PATH}"
-export PYTHONPATH="$DNG_ROOT/@LIBDIR@/python@PYTHON_VERSION@/site-packages/:$OST_ADDITIONAL_PYTHONPATH"
 # set QT_PLUGIN_PATH for bundle (commented except in linux bundles)
 #export QT_PLUGIN_PATH="$BIN_DIR/plugins"