diff --git a/recipes/windows/cores-windows-x64_seh-generic.conf b/recipes/windows/cores-windows-x64_seh-generic.conf
index 5037f504..7a6f04ee 100644
--- a/recipes/windows/cores-windows-x64_seh-generic.conf
+++ b/recipes/windows/cores-windows-x64_seh-generic.conf
@@ -1,6 +1,6 @@
 PATH /mingw64/lib/ccache/bin:/mingw64/bin
 MSYSTEM MINGW64
-platform windows
+platform MINGW64
 PLATFORM windows
 ARCH x86_64
 MAKE make.exe
diff --git a/recipes/windows/cores-windows-x64_sjlj-generic.conf b/recipes/windows/cores-windows-x64_sjlj-generic.conf
index c55d5fe4..d1895d90 100644
--- a/recipes/windows/cores-windows-x64_sjlj-generic.conf
+++ b/recipes/windows/cores-windows-x64_sjlj-generic.conf
@@ -1,7 +1,7 @@
 PATH /home/buildbot/tools/mingw64_posix/bin:/home/buildbot/tools/python
 MINGW64 /home/buildbot/tools/mingw64_posix/
 MSYSTEM MINGW64
-platform windows
+platform MINGW64
 PLATFORM windows
 MAKE make
 CC gcc
diff --git a/recipes/windows/cores-windows-x86_dw2-cross.conf b/recipes/windows/cores-windows-x86_dw2-cross.conf
index c99440d4..0e203c10 100644
--- a/recipes/windows/cores-windows-x86_dw2-cross.conf
+++ b/recipes/windows/cores-windows-x86_dw2-cross.conf
@@ -1,6 +1,6 @@
 PATH /mingw32/lib/ccache/bin:/mingw32/bin
 MSYSTEM MINGW32
-platform windows
+platform MINGW32
 PLATFORM windows
 ARCH x86
 MAKE make.exe
diff --git a/recipes/windows/cores-windows-x86_dw2-generic.conf b/recipes/windows/cores-windows-x86_dw2-generic.conf
index c99440d4..0e203c10 100644
--- a/recipes/windows/cores-windows-x86_dw2-generic.conf
+++ b/recipes/windows/cores-windows-x86_dw2-generic.conf
@@ -1,6 +1,6 @@
 PATH /mingw32/lib/ccache/bin:/mingw32/bin
 MSYSTEM MINGW32
-platform windows
+platform MINGW32
 PLATFORM windows
 ARCH x86
 MAKE make.exe
diff --git a/recipes/windows/cores-windows-x86_sjlj-generic.conf b/recipes/windows/cores-windows-x86_sjlj-generic.conf
index 4dc698a0..85e24c70 100644
--- a/recipes/windows/cores-windows-x86_sjlj-generic.conf
+++ b/recipes/windows/cores-windows-x86_sjlj-generic.conf
@@ -1,7 +1,7 @@
 PATH /home/buildbot/tools/mingw32_posix/bin:/home/buildbot/tools/python
 MINGW32 /home/buildbot/tools/mingw32_posix/
 MSYSTEM MINGW32
-platform windows
+platform MINGW32
 PLATFORM windows
 ARCH x86
 MAKE make.exe
diff --git a/recipes/windows/cores-windows-x86_w32_dw2-generic.conf b/recipes/windows/cores-windows-x86_w32_dw2-generic.conf
index 91f551b2..1edb171c 100644
--- a/recipes/windows/cores-windows-x86_w32_dw2-generic.conf
+++ b/recipes/windows/cores-windows-x86_w32_dw2-generic.conf
@@ -1,4 +1,5 @@
 PATH /mingw32/lib/ccache/bin/:/mingw32_w32/bin/
+MSYSTEM MINGW32
 platform MINGW32
 PLATFORM windows
 ARCH x86
diff --git a/recipes/windows/retroarch-windows-x64_seh.conf b/recipes/windows/retroarch-windows-x64_seh.conf
index 8fd36fc7..f73f68c5 100644
--- a/recipes/windows/retroarch-windows-x64_seh.conf
+++ b/recipes/windows/retroarch-windows-x64_seh.conf
@@ -1,6 +1,6 @@
 PATH /mingw64/lib/ccache/bin:/mingw64/bin
 MSYSTEM MINGW64
-platform windows
+platform MINGW64
 PLATFORM windows
 ARCH x86_64
 MAKE make
diff --git a/recipes/windows/retroarch-windows-x86_dw2.conf b/recipes/windows/retroarch-windows-x86_dw2.conf
index 425a210d..79d835a2 100644
--- a/recipes/windows/retroarch-windows-x86_dw2.conf
+++ b/recipes/windows/retroarch-windows-x86_dw2.conf
@@ -1,6 +1,6 @@
 PATH /mingw32/lib/ccache/bin:/mingw32/bin
 MSYSTEM MINGW32
-platform windows
+platform MINGW32
 PLATFORM windows
 ARCH x86
 MAKE make