diff --git a/apps/sharebymail/lib/ShareByMailProvider.php b/apps/sharebymail/lib/ShareByMailProvider.php
index cdef06f5345e9d2f2554e162124a20d6378934d4..50fbd6fa0ed795d4b8f36a24a94e87a48c4cb8e1 100644
--- a/apps/sharebymail/lib/ShareByMailProvider.php
+++ b/apps/sharebymail/lib/ShareByMailProvider.php
@@ -519,8 +519,8 @@ class ShareByMailProvider implements IShareProvider {
 		$initiatorDisplayName = ($initiatorUser instanceof IUser) ? $initiatorUser->getDisplayName() : $initiator;
 		$initiatorEmailAddress = ($initiatorUser instanceof IUser) ? $initiatorUser->getEMailAddress() : null;
 
-		$plainHeading = $this->l->t('%1s shared »%2s« with you and want to add:', [$initiatorDisplayName, $filename]);
-		$htmlHeading = $this->l->t('%1s shared »%2s« with you and want to add:', [$initiatorDisplayName, $filename]);
+		$plainHeading = $this->l->t('%1$s shared »%2$s« with you and want to add:', [$initiatorDisplayName, $filename]);
+		$htmlHeading = $this->l->t('%1$s shared »%2$s« with you and want to add:', [$initiatorDisplayName, $filename]);
 
 		$message = $this->mailer->createMessage();
 
@@ -534,7 +534,7 @@ class ShareByMailProvider implements IShareProvider {
 		// The "From" contains the sharers name
 		$instanceName = $this->defaults->getName();
 		$senderName = $this->l->t(
-			'%s via %s',
+			'%1$s via %2$s',
 			[
 				$initiatorDisplayName,
 				$instanceName
diff --git a/lib/private/Share20/DefaultShareProvider.php b/lib/private/Share20/DefaultShareProvider.php
index 8ecd1e811bac3b1709dfea41a9b80f712daefbc1..2594b9e297394a85c3fe3ad0aea05d9b817b65ba 100644
--- a/lib/private/Share20/DefaultShareProvider.php
+++ b/lib/private/Share20/DefaultShareProvider.php
@@ -1310,8 +1310,8 @@ class DefaultShareProvider implements IShareProvider {
 			$initiatorDisplayName = ($initiatorUser instanceof IUser) ? $initiatorUser->getDisplayName() : $initiator;
 			$initiatorEmailAddress = ($initiatorUser instanceof IUser) ? $initiatorUser->getEMailAddress() : null;
 
-			$plainHeading = $this->l->t('%1s shared »%2s« with you and want to add:', [$initiatorDisplayName, $filename]);
-			$htmlHeading = $this->l->t('%1s shared »%2s« with you and want to add:', [$initiatorDisplayName, $filename]);
+			$plainHeading = $this->l->t('%1$s shared »%2$s« with you and want to add:', [$initiatorDisplayName, $filename]);
+			$htmlHeading = $this->l->t('%1$s shared »%2$s« with you and want to add:', [$initiatorDisplayName, $filename]);
 
 			$message = $this->mailer->createMessage();
 
@@ -1325,7 +1325,7 @@ class DefaultShareProvider implements IShareProvider {
 			// The "From" contains the sharers name
 			$instanceName = $this->defaults->getName();
 			$senderName = $this->l->t(
-				'%s via %s',
+				'%1$s via %2$s',
 				[
 					$initiatorDisplayName,
 					$instanceName