diff --git a/windows/make-windows-installer.bat b/windows/make-windows-installer.bat
index d4816fa69..5e574c9db 100644
--- a/windows/make-windows-installer.bat
+++ b/windows/make-windows-installer.bat
@@ -5,6 +5,9 @@ cabal sandbox init
 cabal clean
 cabal install hsb2hs
 if %errorlevel% neq 0 exit /b %errorlevel%
+REM We do it once to regenrate data/reference.docx/odt
+cabal install -v1 --force --reinstall --flags="embed_data_files"
+REM then again for real, because otherwise it won't work with embed_data_files:
 cabal install -v1 --force --reinstall --flags="embed_data_files" . pandoc-citeproc
 if %errorlevel% neq 0 exit /b %errorlevel%
 strip .\.cabal-sandbox\bin\pandoc.exe