diff --git a/.appveyor/Build.bat b/.appveyor/Build.bat
index 3e06bb54..01515d11 100644
--- a/.appveyor/Build.bat
+++ b/.appveyor/Build.bat
@@ -10,7 +10,7 @@ set SDL2_DIR=%windows_sdl2_dir%
 
 premake5 vs2019
 
-set config=Debug:Release
+set config=Debug:Release:Release_Dev
 for %%c in (%config::= %) do (
     msbuild .\REDRIVER2.sln /p:Configuration="%%c" /p:Platform=Win32 /m ^
         /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" ^
diff --git a/src_rebuild/PsyX/premake5.lua b/src_rebuild/PsyX/premake5.lua
index 5adb46c2..af3f24ae 100644
--- a/src_rebuild/PsyX/premake5.lua
+++ b/src_rebuild/PsyX/premake5.lua
@@ -62,5 +62,5 @@ project "Psy-X"
     filter "configurations:Release"
         optimize "Full"
 		
-	filter "configurations:Release Dev"
+	filter "configurations:Release_Dev"
         optimize "Full"
\ No newline at end of file
diff --git a/src_rebuild/premake5.lua b/src_rebuild/premake5.lua
index b1070679..e7b01759 100644
--- a/src_rebuild/premake5.lua
+++ b/src_rebuild/premake5.lua
@@ -16,7 +16,7 @@ if not (GAME_REGION == "NTSC_VERSION" or GAME_REGION == "PAL_VERSION") then
 end
 	
 workspace "REDRIVER2"
-    configurations { "Debug", "Release", "Release Dev" }
+    configurations { "Debug", "Release", "Release_Dev" }
 
     defines { VERSION } 
 
@@ -34,7 +34,7 @@ workspace "REDRIVER2"
             "NDEBUG",
         }
 		
-	filter "configurations:Release Dev"
+	filter "configurations:Release_Dev"
         defines {
             "NDEBUG",
         }
@@ -167,7 +167,7 @@ project "REDRIVER2"
     filter "configurations:Release"
         optimize "Full"
 		
-	filter "configurations:Release Dev"
+	filter "configurations:Release_Dev"
 		targetsuffix "_dev"
         defines { 
             "DEBUG_OPTIONS",