diff --git a/keyserver/src/responders/message-responders.js b/keyserver/src/responders/message-responders.js
--- a/keyserver/src/responders/message-responders.js
+++ b/keyserver/src/responders/message-responders.js
@@ -241,7 +241,11 @@
   const [serverThreadInfos, hasPermission, targetMessageUserInfos] =
     await Promise.all([
       fetchServerThreadInfos(SQL`t.id = ${threadID}`),
-      checkThreadPermission(viewer, threadID, threadPermissions.VOICED),
+      checkThreadPermission(
+        viewer,
+        threadID,
+        threadPermissions.REACT_TO_MESSAGE,
+      ),
       fetchKnownUserInfos(viewer, [targetMessageInfo.creatorID]),
     ]);
 
diff --git a/lib/shared/reaction-utils.js b/lib/shared/reaction-utils.js
--- a/lib/shared/reaction-utils.js
+++ b/lib/shared/reaction-utils.js
@@ -94,7 +94,7 @@
 
   const hasPermission = threadHasPermission(
     threadInfo,
-    threadPermissions.VOICED,
+    threadPermissions.REACT_TO_MESSAGE,
   );
 
   return hasPermission && !creatorRelationshipHasBlock;