diff --git a/r5dev/common/completion.cpp b/r5dev/common/completion.cpp
index a94918b9..702a487c 100644
--- a/r5dev/common/completion.cpp
+++ b/r5dev/common/completion.cpp
@@ -27,7 +27,7 @@ int _Host_Map_f_CompletionFunc(char const* cmdname, char const* partial, char co
 		substring = (char*)partial + strlen(cmdname);
 	}
 
-	const int mapcount = (int)g_InstalledMaps.size();
+	const int mapcount = g_InstalledMaps.Count();
 	const int longest = COMMAND_COMPLETION_ITEM_LENGTH;
 	const int count = MIN(mapcount, COMMAND_COMPLETION_MAXITEMS);
 
@@ -36,9 +36,9 @@ int _Host_Map_f_CompletionFunc(char const* cmdname, char const* partial, char co
 	{
 		for (int i = 0; i < count; i++)
 		{
-			if (strstr(g_InstalledMaps[i].c_str(), substring))
+			if (strstr(g_InstalledMaps[i].String(), substring))
 			{
-				strncpy(commands[filtered_count], g_InstalledMaps[i].c_str(), longest);
+				strncpy(commands[filtered_count], g_InstalledMaps[i].String(), longest);
 
 				char old[COMMAND_COMPLETION_ITEM_LENGTH];
 				strncpy(old, commands[filtered_count], sizeof(old));
diff --git a/r5dev/engine/cmodel_bsp.cpp b/r5dev/engine/cmodel_bsp.cpp
index 19562068..462c8303 100644
--- a/r5dev/engine/cmodel_bsp.cpp
+++ b/r5dev/engine/cmodel_bsp.cpp
@@ -21,7 +21,7 @@
 #include "client/clientstate.h"
 #endif // !DEDICATED
 
-vector<string> g_InstalledMaps;
+CUtlVector<CUtlString> g_InstalledMaps;
 string s_LevelName;
 
 std::regex s_ArchiveRegex{ R"([^_]*_(.*)(.bsp.pak000_dir).*)" };
@@ -52,7 +52,7 @@ void Mod_GetAllInstalledMaps()
     std::cmatch regexMatches;
     std::lock_guard<std::mutex> l(g_InstalledMapsMutex);
 
-    g_InstalledMaps.clear(); // Clear current list.
+    g_InstalledMaps.Purge(); // Clear current list.
 
     FOR_EACH_VEC(fileList, i)
     {
@@ -67,18 +67,20 @@ void Mod_GetAllInstalledMaps()
 
         if (!regexMatches.empty())
         {
-            if (regexMatches[1].str().compare("frontend") == 0)
+            const string match = regexMatches[1].str();
+
+            if (match.compare("frontend") == 0)
                 continue; // Frontend contains no BSP's.
 
-            else if (regexMatches[1].str().compare("mp_common") == 0)
+            else if (match.compare("mp_common") == 0)
             {
-                if (std::find(g_InstalledMaps.begin(), g_InstalledMaps.end(), "mp_lobby") == g_InstalledMaps.end())
-                    g_InstalledMaps.push_back("mp_lobby");
+                if (!g_InstalledMaps.HasElement("mp_lobby"))
+                    g_InstalledMaps.AddToTail("mp_lobby");
+
                 continue; // Common contains mp_lobby.
             }
-
-            if (std::find(g_InstalledMaps.begin(), g_InstalledMaps.end(), regexMatches[1].str()) == g_InstalledMaps.end())
-                g_InstalledMaps.push_back(regexMatches[1].str());
+            else if (!g_InstalledMaps.HasElement(match.c_str()))
+                g_InstalledMaps.AddToTail(match.c_str());
         }
     }
 }
diff --git a/r5dev/engine/cmodel_bsp.h b/r5dev/engine/cmodel_bsp.h
index fb94a996..ff66ce91 100644
--- a/r5dev/engine/cmodel_bsp.h
+++ b/r5dev/engine/cmodel_bsp.h
@@ -27,7 +27,7 @@ inline __int64(*sub_14045A1D0)(unsigned __int8(__fastcall* a1)(_QWORD), JobFifoL
 inline void(*sub_140441220)(__int64 a1, __int64 a2);
 
 extern bool s_bBasePaksInitialized;
-extern vector<string> g_InstalledMaps;
+extern CUtlVector<CUtlString> g_InstalledMaps;
 
 bool Mod_LevelHasChanged(const char* pszLevelName);
 void Mod_GetAllInstalledMaps();
diff --git a/r5dev/game/shared/vscript_shared.cpp b/r5dev/game/shared/vscript_shared.cpp
index 8dc435c2..9ad86027 100644
--- a/r5dev/game/shared/vscript_shared.cpp
+++ b/r5dev/game/shared/vscript_shared.cpp
@@ -38,13 +38,16 @@ namespace VScriptCode
         {
             std::lock_guard<std::mutex> l(g_InstalledMapsMutex);
 
-            if (g_InstalledMaps.empty())
+            if (g_InstalledMaps.IsEmpty())
                 return SQ_OK;
 
             sq_newarray(v, 0);
-            for (const string& it : g_InstalledMaps)
+
+            FOR_EACH_VEC(g_InstalledMaps, i)
             {
-                sq_pushstring(v, it.c_str(), -1);
+                const CUtlString& mapName = g_InstalledMaps[i];
+
+                sq_pushstring(v, mapName.String(), -1);
                 sq_arrayappend(v, -2);
             }
 
diff --git a/r5dev/gameui/IBrowser.cpp b/r5dev/gameui/IBrowser.cpp
index 5854aaef..566cbc86 100644
--- a/r5dev/gameui/IBrowser.cpp
+++ b/r5dev/gameui/IBrowser.cpp
@@ -519,11 +519,15 @@ void CBrowser::HostPanel(void)
     if (ImGui::BeginCombo("Map", g_pServerListManager->m_Server.m_svHostMap.c_str()))
     {
         g_InstalledMapsMutex.lock();
-        for (const string& svMap : g_InstalledMaps)
+
+        FOR_EACH_VEC(g_InstalledMaps, i)
         {
-            if (ImGui::Selectable(svMap.c_str(), svMap == g_pServerListManager->m_Server.m_svHostMap))
+            const CUtlString& mapName = g_InstalledMaps[i];
+
+            if (ImGui::Selectable(mapName.String(),
+                mapName.IsEqual_CaseInsensitive(g_pServerListManager->m_Server.m_svHostMap.c_str())))
             {
-                g_pServerListManager->m_Server.m_svHostMap = svMap;
+                g_pServerListManager->m_Server.m_svHostMap = mapName.String();
             }
         }