diff --git a/repo/includes/Diff/BasicDiffView.php b/repo/includes/Diff/BasicDiffView.php
index 3893ab2f985..c7a73e4f470 100644
--- a/repo/includes/Diff/BasicDiffView.php
+++ b/repo/includes/Diff/BasicDiffView.php
@@ -11,7 +11,7 @@
 use Diff\DiffOp\DiffOpRemove;
 use Html;
 use UnexpectedValueException;
-use WordLevelDiff;
+use Wikimedia\Diff\WordLevelDiff;
 
 /**
  * Class for generating views of DiffOp objects.
diff --git a/repo/includes/Diff/SiteLinkDiffView.php b/repo/includes/Diff/SiteLinkDiffView.php
index f296eed8d2b..0d30b04b413 100644
--- a/repo/includes/Diff/SiteLinkDiffView.php
+++ b/repo/includes/Diff/SiteLinkDiffView.php
@@ -19,7 +19,7 @@
 use UnexpectedValueException;
 use Wikibase\DataModel\Entity\ItemId;
 use Wikibase\DataModel\Services\EntityId\EntityIdFormatter;
-use WordLevelDiff;
+use Wikimedia\Diff\WordLevelDiff;
 
 /**
  * Class for generating views of DiffOp objects