diff --git a/Minecraft.Client/UI/Gui.cpp b/Minecraft.Client/UI/Gui.cpp
index 87213ba19..fc1f8ea47 100644
--- a/Minecraft.Client/UI/Gui.cpp
+++ b/Minecraft.Client/UI/Gui.cpp
@@ -1349,7 +1349,7 @@ void Gui::addMessage(const std::wstring& _string,int iPad,bool bIsDeathMessage)
 }
 
 // 4J Added
-float Gui::getOpacity(int iPad, DWORD index)
+float Gui::getOpacity(int iPad, std::size_t index)
 {
 	float opacityPercentage = 0;
 	if (guiMessages[iPad].size() > index && guiMessages[iPad][index].ticks < 20 * 10)
diff --git a/Minecraft.Client/UI/Gui.h b/Minecraft.Client/UI/Gui.h
index 590947f0e..725a3b4c6 100644
--- a/Minecraft.Client/UI/Gui.h
+++ b/Minecraft.Client/UI/Gui.h
@@ -1,4 +1,5 @@
 #pragma once
+#include <cstddef>
 #include "GuiComponent.h"
 #include "GuiMessage.h"
 class Random;
@@ -55,9 +56,9 @@ public:
     void displayClientMessage(int messageId, int iPad);
 
 	// 4J Added
-	DWORD getMessagesCount(int iPad) { return (int)guiMessages[iPad].size(); }
-	std::wstring getMessage(int iPad, DWORD index) { return guiMessages[iPad].at(index).string; }
-	float getOpacity(int iPad, DWORD index);
+	std::size_t getMessagesCount(int iPad) { return guiMessages[iPad].size(); }
+	std::wstring getMessage(int iPad, std::size_t index) { return guiMessages[iPad].at(index).string; }
+	float getOpacity(int iPad, std::size_t index);
 
 	std::wstring getJukeboxMessage(int iPad) { return overlayMessageString; }
 	float getJukeboxOpacity(int iPad);