diff --git a/scripts/ost_config.in b/scripts/ost_config.in
index 5894bdb12c62241d556e04fb909eb9f83a17c5ef..fe0d9e84169e64a7225c3bd135c4f3c63334df02 100644
--- a/scripts/ost_config.in
+++ b/scripts/ost_config.in
@@ -30,9 +30,9 @@ 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}"
-# set QT_PLUGIN_PATH and PYTHONPATH for bundle (commented except in linux bundles)
+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="$BIN_DIR/plugins"
-#export PYTHONPATH="$DNG_ROOT/@LIBDIR@/python@PYTHON_VERSION@:$OST_ADDITIONAL_PYTHONPATH"
 
 # retrieve absolute path to python executable
 pyexec="@PYTHON_BINARY@"