diff --git a/Code/Framework/AzToolsFramework/AzToolsFramework/AssetBrowser/Thumbnails/FolderThumbnail.cpp b/Code/Framework/AzToolsFramework/AzToolsFramework/AssetBrowser/Thumbnails/FolderThumbnail.cpp
index 01f164b506..71bac86c0a 100644
--- a/Code/Framework/AzToolsFramework/AzToolsFramework/AssetBrowser/Thumbnails/FolderThumbnail.cpp
+++ b/Code/Framework/AzToolsFramework/AzToolsFramework/AssetBrowser/Thumbnails/FolderThumbnail.cpp
@@ -12,7 +12,6 @@
 
 #include <AzCore/Utils/Utils.h>
 #include <AzCore/Debug/Trace.h>
-#include <AzCore/StringFunc/StringFunc.h>
 #include <AzToolsFramework/AssetBrowser/Thumbnails/FolderThumbnail.h>
 #include <AzFramework/API/ApplicationAPI.h>
 #include <QPixmap>
@@ -64,9 +63,7 @@ namespace AzToolsFramework
             AZ_Assert(folderKey, "Incorrect key type, excpected FolderThumbnailKey");
 
             const char* folderIcon = folderKey->IsGem() ? GemIconPath : FolderIconPath;
-            AZStd::string absoluteIconPath;
-            AZ::StringFunc::Path::Join(AZ::Utils::GetEnginePath().c_str(), folderIcon, absoluteIconPath);
-
+            auto absoluteIconPath = AZ::IO::FixedMaxPath(AZ::Utils::GetEnginePath()) / folderIcon;
             m_pixmap.load(absoluteIconPath.c_str());
             m_state = m_pixmap.isNull() ? State::Failed : State::Ready;
         }
diff --git a/Code/Framework/AzToolsFramework/AzToolsFramework/Thumbnails/LoadingThumbnail.cpp b/Code/Framework/AzToolsFramework/AzToolsFramework/Thumbnails/LoadingThumbnail.cpp
index 0ad5453c65..c29a9e4c6b 100644
--- a/Code/Framework/AzToolsFramework/AzToolsFramework/Thumbnails/LoadingThumbnail.cpp
+++ b/Code/Framework/AzToolsFramework/AzToolsFramework/Thumbnails/LoadingThumbnail.cpp
@@ -11,7 +11,6 @@
 */
 
 #include <AzCore/Utils/Utils.h>
-#include <AzCore/StringFunc/StringFunc.h>
 #include <AzToolsFramework/Thumbnails/LoadingThumbnail.h>
 #include <AzFramework/Application/Application.h>
 
@@ -30,9 +29,8 @@ namespace AzToolsFramework
             : Thumbnail(MAKE_TKEY(ThumbnailKey))
             , m_angle(0)
         {
-            AZStd::string iconPath;
-            AZ::StringFunc::Path::Join(AZ::Utils::GetEnginePath().c_str(), LoadingIconPath, iconPath);
-            m_loadingMovie.setFileName(iconPath.c_str());
+            auto absoluteIconPath = AZ::IO::FixedMaxPath(AZ::Utils::GetEnginePath()) / LoadingIconPath;
+            m_loadingMovie.setFileName(absoluteIconPath.c_str());
             m_loadingMovie.setCacheMode(QMovie::CacheMode::CacheAll);
             m_loadingMovie.setScaledSize(QSize(LoadingThumbnailSize, LoadingThumbnailSize));
             m_loadingMovie.start();
diff --git a/Code/Framework/AzToolsFramework/AzToolsFramework/Thumbnails/MissingThumbnail.cpp b/Code/Framework/AzToolsFramework/AzToolsFramework/Thumbnails/MissingThumbnail.cpp
index 2a2afa005b..39af7d9293 100644
--- a/Code/Framework/AzToolsFramework/AzToolsFramework/Thumbnails/MissingThumbnail.cpp
+++ b/Code/Framework/AzToolsFramework/AzToolsFramework/Thumbnails/MissingThumbnail.cpp
@@ -11,7 +11,6 @@
 */
 
 #include <AzCore/Utils/Utils.h>
-#include <AzCore/StringFunc/StringFunc.h>
 #include <AzFramework/API/ApplicationAPI.h>
 #include <AzToolsFramework/Thumbnails/MissingThumbnail.h>
 
@@ -24,9 +23,7 @@ namespace AzToolsFramework
         MissingThumbnail::MissingThumbnail()
             : Thumbnail(MAKE_TKEY(ThumbnailKey))
         {
-            AZStd::string absoluteIconPath;
-            AZ::StringFunc::Path::Join(AZ::Utils::GetEnginePath().c_str(), MissingIconPath, absoluteIconPath);
-
+            auto absoluteIconPath = AZ::IO::FixedMaxPath(AZ::Utils::GetEnginePath()) / MissingIconPath;
             m_pixmap.load(absoluteIconPath.c_str());
             m_state = m_pixmap.isNull() ? State::Failed : State::Ready;
         }