diff --git a/web/src/message_store.ts b/web/src/message_store.ts
index 43bdfd265c..cf79224d73 100644
--- a/web/src/message_store.ts
+++ b/web/src/message_store.ts
@@ -79,7 +79,8 @@ export const raw_message_schema = z.intersection(
             sender_email: z.string(),
             sender_full_name: z.string(),
             sender_id: z.number(),
-            sender_realm_str: z.string(),
+            // The web app doesn't use sender_realm_str; ignore.
+            // sender_realm_str: z.string(),
             submessages: z.array(submessage_schema),
             timestamp: z.number(),
             flags: z.array(z.string()),
diff --git a/web/src/server_message.ts b/web/src/server_message.ts
index 6de5fda57b..d0a0e494ca 100644
--- a/web/src/server_message.ts
+++ b/web/src/server_message.ts
@@ -54,7 +54,8 @@ export const server_message_schema = z.intersection(
         sender_email: z.string(),
         sender_full_name: z.string(),
         sender_id: z.number(),
-        sender_realm_str: z.string(),
+        // The web app doesn't use sender_realm_str; ignore.
+        // sender_realm_str: z.string(),
         submessages: submessage_schema,
         timestamp: z.number(),
     }),
diff --git a/web/tests/server_events.test.cjs b/web/tests/server_events.test.cjs
index 9aae13a68d..0234a9eba3 100644
--- a/web/tests/server_events.test.cjs
+++ b/web/tests/server_events.test.cjs
@@ -75,7 +75,6 @@ const message = {
     submessages: [],
     sender_full_name: "user1",
     sender_email: "user2@foo.com",
-    sender_realm_str: "foo",
     display_recipient: "test",
     type: "stream",
     stream_id: 1,