diff --git a/src/inspector/main_thread_interface.cc b/src/inspector/main_thread_interface.cc
index 0cf75a37146729..0a0afe8aeda0a9 100644
--- a/src/inspector/main_thread_interface.cc
+++ b/src/inspector/main_thread_interface.cc
@@ -1,11 +1,8 @@
 #include "main_thread_interface.h"
 
 #include "env-inl.h"
-#include "node_mutex.h"
+#include "simdutf.h"
 #include "v8-inspector.h"
-#include "util-inl.h"
-
-#include <unicode/unistr.h>
 
 #include <functional>
 #include <memory>
@@ -288,11 +285,13 @@ Deletable* MainThreadInterface::GetObjectIfExists(int id) {
   return iterator->second.get();
 }
 
-std::unique_ptr<StringBuffer> Utf8ToStringView(const std::string& message) {
-  icu::UnicodeString utf16 = icu::UnicodeString::fromUTF8(
-      icu::StringPiece(message.data(), message.length()));
-  StringView view(reinterpret_cast<const uint16_t*>(utf16.getBuffer()),
-                  utf16.length());
+std::unique_ptr<StringBuffer> Utf8ToStringView(const std::string_view message) {
+  size_t expected_u16_length =
+      simdutf::utf16_length_from_utf8(message.data(), message.length());
+  MaybeStackBuffer<char16_t> buffer(expected_u16_length);
+  size_t utf16_length = simdutf::convert_utf8_to_utf16(
+      message.data(), message.length(), buffer.out());
+  StringView view(reinterpret_cast<uint16_t*>(buffer.out()), utf16_length);
   return StringBuffer::create(view);
 }
 
diff --git a/src/inspector/main_thread_interface.h b/src/inspector/main_thread_interface.h
index 3ec5b3db3e1600..71989db3bcacb9 100644
--- a/src/inspector/main_thread_interface.h
+++ b/src/inspector/main_thread_interface.h
@@ -34,7 +34,7 @@ class Deletable {
 };
 
 std::unique_ptr<v8_inspector::StringBuffer> Utf8ToStringView(
-    const std::string& message);
+    const std::string_view message);
 
 using MessageQueue = std::deque<std::unique_ptr<Request>>;