diff --git a/platform/android/tts_android.h b/platform/android/tts_android.h
index 8e3bfccbdb1..8e00ac5000f 100644
--- a/platform/android/tts_android.h
+++ b/platform/android/tts_android.h
@@ -32,6 +32,7 @@
 #define TTS_ANDROID_H
 
 #include "core/string/ustring.h"
+#include "core/templates/hash_map.h"
 #include "core/variant/array.h"
 #include "servers/display_server.h"
 
diff --git a/platform/ios/tts_ios.h b/platform/ios/tts_ios.h
index 2d104de8ae0..7f9d30b22b5 100644
--- a/platform/ios/tts_ios.h
+++ b/platform/ios/tts_ios.h
@@ -38,8 +38,8 @@
 #endif
 
 #include "core/string/ustring.h"
+#include "core/templates/hash_map.h"
 #include "core/templates/list.h"
-#include "core/templates/rb_map.h"
 #include "core/variant/array.h"
 #include "servers/display_server.h"
 
diff --git a/platform/linuxbsd/tts_linux.h b/platform/linuxbsd/tts_linux.h
index 4134f8fa2fe..651a64d9d62 100644
--- a/platform/linuxbsd/tts_linux.h
+++ b/platform/linuxbsd/tts_linux.h
@@ -34,8 +34,8 @@
 #include "core/os/thread.h"
 #include "core/os/thread_safe.h"
 #include "core/string/ustring.h"
+#include "core/templates/hash_map.h"
 #include "core/templates/list.h"
-#include "core/templates/rb_map.h"
 #include "core/variant/array.h"
 #include "servers/display_server.h"
 
diff --git a/platform/macos/tts_macos.h b/platform/macos/tts_macos.h
index 2153a4c692d..35205bd1ae4 100644
--- a/platform/macos/tts_macos.h
+++ b/platform/macos/tts_macos.h
@@ -32,8 +32,8 @@
 #define TTS_MACOS_H
 
 #include "core/string/ustring.h"
+#include "core/templates/hash_map.h"
 #include "core/templates/list.h"
-#include "core/templates/rb_map.h"
 #include "core/variant/array.h"
 #include "servers/display_server.h"
 
diff --git a/platform/windows/tts_windows.cpp b/platform/windows/tts_windows.cpp
index 3a143d0ecb0..54ab93ee01e 100644
--- a/platform/windows/tts_windows.cpp
+++ b/platform/windows/tts_windows.cpp
@@ -36,15 +36,16 @@ void __stdcall TTS_Windows::speech_event_callback(WPARAM wParam, LPARAM lParam)
 	TTS_Windows *tts = TTS_Windows::get_singleton();
 	SPEVENT event;
 	while (tts->synth->GetEvents(1, &event, NULL) == S_OK) {
-		if (tts->ids.has(event.ulStreamNum)) {
+		uint32_t stream_num = (uint32_t)event.ulStreamNum;
+		if (tts->ids.has(stream_num)) {
 			if (event.eEventId == SPEI_START_INPUT_STREAM) {
-				DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_STARTED, tts->ids[event.ulStreamNum].id);
+				DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_STARTED, tts->ids[stream_num].id);
 			} else if (event.eEventId == SPEI_END_INPUT_STREAM) {
-				DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_ENDED, tts->ids[event.ulStreamNum].id);
-				tts->ids.erase(event.ulStreamNum);
+				DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_ENDED, tts->ids[stream_num].id);
+				tts->ids.erase(stream_num);
 				tts->_update_tts();
 			} else if (event.eEventId == SPEI_WORD_BOUNDARY) {
-				const Char16String &string = tts->ids[event.ulStreamNum].string;
+				const Char16String &string = tts->ids[stream_num].string;
 				int pos = 0;
 				for (int i = 0; i < MIN(event.lParam, string.length()); i++) {
 					char16_t c = string[i];
@@ -53,7 +54,7 @@ void __stdcall TTS_Windows::speech_event_callback(WPARAM wParam, LPARAM lParam)
 					}
 					pos++;
 				}
-				DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_BOUNDARY, tts->ids[event.ulStreamNum].id, pos - tts->ids[event.ulStreamNum].offset);
+				DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_BOUNDARY, tts->ids[stream_num].id, pos - tts->ids[stream_num].offset);
 			}
 		}
 	}
@@ -106,7 +107,7 @@ void TTS_Windows::_update_tts() {
 		synth->SetRate(10.f * log10(message.rate) / log10(3.f));
 		synth->Speak((LPCWSTR)ut.string.get_data(), flags, &stream_number);
 
-		ids[stream_number] = ut;
+		ids[(uint32_t)stream_number] = ut;
 
 		queue.pop_front();
 	}
@@ -230,9 +231,10 @@ void TTS_Windows::stop() {
 
 	SPVOICESTATUS status;
 	synth->GetStatus(&status, nullptr);
-	if (ids.has(status.ulCurrentStream)) {
-		DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_CANCELED, ids[status.ulCurrentStream].id);
-		ids.erase(status.ulCurrentStream);
+	uint32_t current_stream = (uint32_t)status.ulCurrentStream;
+	if (ids.has(current_stream)) {
+		DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_CANCELED, ids[current_stream].id);
+		ids.erase(current_stream);
 	}
 	for (DisplayServer::TTSUtterance &message : queue) {
 		DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_CANCELED, message.id);
diff --git a/platform/windows/tts_windows.h b/platform/windows/tts_windows.h
index f0538a097cb..33b597c6125 100644
--- a/platform/windows/tts_windows.h
+++ b/platform/windows/tts_windows.h
@@ -32,8 +32,8 @@
 #define TTS_WINDOWS_H
 
 #include "core/string/ustring.h"
+#include "core/templates/hash_map.h"
 #include "core/templates/list.h"
-#include "core/templates/rb_map.h"
 #include "core/variant/array.h"
 #include "servers/display_server.h"
 
@@ -54,7 +54,7 @@ class TTS_Windows {
 		int offset;
 		int id;
 	};
-	RBMap<ULONG, UTData> ids;
+	HashMap<uint32_t, UTData> ids;
 
 	static void __stdcall speech_event_callback(WPARAM wParam, LPARAM lParam);
 	void _update_tts();