diff --git a/includes/specials/SpecialRevisionDelete.php b/includes/specials/SpecialRevisionDelete.php
index 23042aaeed2..d1a1a5e56eb 100644
--- a/includes/specials/SpecialRevisionDelete.php
+++ b/includes/specials/SpecialRevisionDelete.php
@@ -223,7 +223,7 @@ class SpecialRevisionDelete extends UnlistedSpecialPage {
 		$pageIsSuppressed = $list->areAnySuppressed();
 		$this->mIsAllowed = $this->mIsAllowed && !( $canViewSuppressedOnly && $pageIsSuppressed );
 
-		$this->otherReason = $request->getVal( 'wpReason' );
+		$this->otherReason = $request->getVal( 'wpReason', '' );
 		# Give a link to the logs/hist for this page
 		$this->showConvenienceLinks();