diff --git a/writerfilter/CustomTarget_source.mk b/writerfilter/CustomTarget_source.mk
index 6e751c0832cc..b3bc00cc648e 100644
--- a/writerfilter/CustomTarget_source.mk
+++ b/writerfilter/CustomTarget_source.mk
@@ -49,7 +49,6 @@ writerfilter_ALL = \
 	$(writerfilter_GEN_ooxml_Factory_cxx) \
 	$(writerfilter_GEN_ooxml_Factory_hxx) \
 	$(writerfilter_GEN_ooxml_FactoryValues_hxx) \
-	$(writerfilter_GEN_ooxml_NamespaceIds_hxx) \
 	$(writerfilter_GEN_ooxml_QNameToStr_cxx) \
 	$(writerfilter_GEN_ooxml_ResourceIds_hxx) \
 	$(writerfilter_GEN_ooxml_Model_validated) \
@@ -63,7 +62,6 @@ writerfilter_GEN_ooxml_Factory_cxx=$(writerfilter_WORK)/ooxml/OOXMLFactory_gener
 writerfilter_GEN_ooxml_Factory_hxx=$(writerfilter_WORK)/ooxml/OOXMLFactory_generated.hxx
 writerfilter_GEN_ooxml_Model_validated=$(writerfilter_WORK)/ooxml/model.validated
 writerfilter_GEN_ooxml_Model_processed=$(writerfilter_WORK)/ooxml/model_preprocessed.xml
-writerfilter_GEN_ooxml_NamespaceIds_hxx=$(writerfilter_WORK)/ooxml/OOXMLnamespaceids.hxx
 writerfilter_GEN_ooxml_QNameToStr_cxx=$(writerfilter_WORK)/ooxml/qnametostr.cxx
 writerfilter_GEN_ooxml_ResourceIds_hxx=$(writerfilter_WORK)/ooxml/resourceids.hxx
 writerfilter_SRC_ooxml_Model=$(writerfilter_SRC)/ooxml/model.xml
@@ -89,10 +87,6 @@ $(writerfilter_GEN_ooxml_Model_processed) : $(writerfilter_SRC_ooxml_Preprocess_
 	$(call gb_Output_announce,$(subst $(WORKDIR)/,,$@),build,PY ,1)
 	$(call gb_Helper_abbreviate_dirs, $(writerfilter_PYTHONCOMMAND) $(writerfilter_SRC_ooxml_Preprocess_py) $(writerfilter_DEP_ooxml_Namespaces_txt) $(writerfilter_SRC_ooxml_Model)) > $@
 
-$(writerfilter_GEN_ooxml_NamespaceIds_hxx) : $(writerfilter_SRC)/ooxml/namespaceids.py $(writerfilter_GEN_ooxml_Model_processed) | $(writerfilter_WORK)/ooxml/.dir
-	$(call gb_Output_announce,$(subst $(WORKDIR)/,,$@),build,PY ,1)
-	$(call gb_Helper_abbreviate_dirs, $(writerfilter_PYTHONCOMMAND) $< $(writerfilter_GEN_ooxml_Model_processed)) > $@
-
 $(writerfilter_GEN_ooxml_QNameToStr_cxx): $(writerfilter_SRC_ooxml_QNameToStr_py) $(writerfilter_GEN_ooxml_Model_processed)
 	$(call gb_Output_announce,$(subst $(WORKDIR)/,,$@),build,PY ,1)
 	$(call gb_Helper_abbreviate_dirs, $(writerfilter_PYTHONCOMMAND) $(writerfilter_SRC_ooxml_QNameToStr_py) $(writerfilter_GEN_ooxml_Model_processed)) > $@
diff --git a/writerfilter/inc/pch/precompiled_writerfilter.hxx b/writerfilter/inc/pch/precompiled_writerfilter.hxx
index 2273cecb06a6..46727f5a5aea 100644
--- a/writerfilter/inc/pch/precompiled_writerfilter.hxx
+++ b/writerfilter/inc/pch/precompiled_writerfilter.hxx
@@ -196,7 +196,6 @@
 #include <oox/token/namespaces.hxx>
 #include <oox/token/tokens.hxx>
 #include <oox/vml/vmlformatting.hxx>
-#include <ooxml/OOXMLnamespaceids.hxx>
 #include <ooxml/resourceids.hxx>
 #include <osl/diagnose.h>
 #include <osl/file.hxx>
diff --git a/writerfilter/source/ooxml/namespaceids.py b/writerfilter/source/ooxml/namespaceids.py
deleted file mode 100644
index c201e7af1a62..000000000000
--- a/writerfilter/source/ooxml/namespaceids.py
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/usr/bin/env python
-#
-# This file is part of the LibreOffice project.
-#
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-#
-
-from __future__ import print_function
-import xml.sax
-import sys
-
-
-class ContentHandler(xml.sax.handler.ContentHandler):
-    def __init__(self):
-        self.tokens = {}
-
-    def startDocument(self):
-        print("""
-#ifndef INCLUDED_OOXML_NAMESPACESIDS_HXX
-#define INCLUDED_OOXML_NAMESPACESIDS_HXX
-
-#include <sal/types.h>
-
-namespace writerfilter {
-namespace ooxml {
-""")
-
-    def endDocument(self):
-        for alias in sorted(self.tokens.keys()):
-            print(self.tokens[alias])
-        print("""
-}}
-#endif //INCLUDED_OOXML_NAMESPACESIDS_HXX""")
-
-    def startElement(self, name, attrs):
-        if name == "namespace-alias":
-            token = """const sal_Int32 NMSP_%s = %s;""" % (attrs["alias"], attrs["id"])
-            if token not in self.tokens:
-                self.tokens[attrs["alias"]] = token
-
-parser = xml.sax.make_parser()
-parser.setContentHandler(ContentHandler())
-parser.parse(sys.argv[1])
-
-# vim:set shiftwidth=4 softtabstop=4 expandtab: