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-rw-r--r--lib/private/L10N/Factory.php5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/private/L10N/Factory.php b/lib/private/L10N/Factory.php
index 150b36cec44..e277a00e653 100644
--- a/lib/private/L10N/Factory.php
+++ b/lib/private/L10N/Factory.php
@@ -290,8 +290,9 @@ class Factory implements IFactory {
// use formal version of german ("Sie" instead of "Du") if the default
// language is set to 'de_DE' if possible
- if (strtolower($lang) === 'de'
- && strtolower($defaultLanguage) === 'de_de' &&
+ if (is_string($defaultLanguage) &&
+ strtolower($lang) === 'de' &&
+ strtolower($defaultLanguage) === 'de_de' &&
$this->languageExists($app, 'de_DE')
) {
$result = 'de_DE';