diff --git a/http/server_sent_event_stream.ts b/http/server_sent_event_stream.ts
index 0a43efcf2..31080e8fd 100644
--- a/http/server_sent_event_stream.ts
+++ b/http/server_sent_event_stream.ts
@@ -24,7 +24,7 @@ export interface ServerSentEventMessage {
 
 function assertHasNoNewline(value: string, varName: string) {
   if (value.match(NEWLINE_REGEXP) !== null) {
-    throw new RangeError(`${varName} cannot contain a newline`);
+    throw new SyntaxError(`${varName} cannot contain a newline`);
   }
 }
 
diff --git a/http/server_sent_event_stream_test.ts b/http/server_sent_event_stream_test.ts
index 0dec098ec..f252b2445 100644
--- a/http/server_sent_event_stream_test.ts
+++ b/http/server_sent_event_stream_test.ts
@@ -62,57 +62,57 @@ Deno.test("ServerSentEventStream throws if single-line fields contain a newline"
   // Comment
   await assertRejects(
     async () => await createStream([{ comment: "a\n" }]).getReader().read(),
-    RangeError,
+    SyntaxError,
     "`message.comment` cannot contain a newline",
   );
 
   await assertRejects(
     async () => await createStream([{ comment: "a\r" }]).getReader().read(),
-    RangeError,
+    SyntaxError,
     "`message.comment` cannot contain a newline",
   );
 
   await assertRejects(
     async () => await createStream([{ comment: "a\n\r" }]).getReader().read(),
-    RangeError,
+    SyntaxError,
     "`message.comment` cannot contain a newline",
   );
 
   // Event
   await assertRejects(
     async () => await createStream([{ event: "a\n" }]).getReader().read(),
-    RangeError,
+    SyntaxError,
     "`message.event` cannot contain a newline",
   );
 
   await assertRejects(
     async () => await createStream([{ event: "a\r" }]).getReader().read(),
-    RangeError,
+    SyntaxError,
     "`message.event` cannot contain a newline",
   );
 
   await assertRejects(
     async () => await createStream([{ event: "a\n\r" }]).getReader().read(),
-    RangeError,
+    SyntaxError,
     "`message.event` cannot contain a newline",
   );
 
   // ID
   await assertRejects(
     async () => await createStream([{ id: "a\n" }]).getReader().read(),
-    RangeError,
+    SyntaxError,
     "`message.id` cannot contain a newline",
   );
 
   await assertRejects(
     async () => await createStream([{ id: "a\r" }]).getReader().read(),
-    RangeError,
+    SyntaxError,
     "`message.id` cannot contain a newline",
   );
 
   await assertRejects(
     async () => await createStream([{ id: "a\n\r" }]).getReader().read(),
-    RangeError,
+    SyntaxError,
     "`message.id` cannot contain a newline",
   );
 });