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-rw-r--r--lib/private/Preview/MSOffice2007.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/private/Preview/MSOffice2007.php b/lib/private/Preview/MSOffice2007.php
index 2e033683c20..0d1177d9de9 100644
--- a/lib/private/Preview/MSOffice2007.php
+++ b/lib/private/Preview/MSOffice2007.php
@@ -26,7 +26,7 @@ class MSOffice2007 extends Office {
/**
* {@inheritDoc}
*/
- public function getMimeType() {
+ public function getMimeType(): string {
return '/application\/vnd.openxmlformats-officedocument.*/';
}
}