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-rw-r--r--desktop/source/lib/init.cxx3
1 files changed, 2 insertions, 1 deletions
diff --git a/desktop/source/lib/init.cxx b/desktop/source/lib/init.cxx
index 1acdbd58841b..94e34cf9dca5 100644
--- a/desktop/source/lib/init.cxx
+++ b/desktop/source/lib/init.cxx
@@ -2227,8 +2227,9 @@ static LibreOfficeKitDocument* lo_documentLoadWithOptions(LibreOfficeKit* pThis,
// not pass it as a parameter to the filter
OUString aOptions = getUString(pOptions);
const OUString aLanguage = extractParameter(aOptions, "Language");
+ bool isValidLangTag = LanguageTag::isValidBcp47(aLanguage, nullptr);
- if (!aLanguage.isEmpty())
+ if (!aLanguage.isEmpty() && isValidLangTag)
{
SfxLokHelper::setDefaultLanguage(aLanguage);
// Set the LOK language tag, used for dialog tunneling.