diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 47cacaf7..c50de59e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -26,7 +26,7 @@ jobs:
         run:  git clone https://github.com/xmrig/xmrig-deps.git
       - name: Build project on Windows
         run: |
-          cmake . -G "Unix Makefiles" -DXMRIG_DEPS=./xmrig-deps/gcc/x64
+          cmake . -G "MinGW Makefiles" -DXMRIG_DEPS=./xmrig-deps/gcc/x64
           make -j2
 
   build_lin:
diff --git a/cmake/os.cmake b/cmake/os.cmake
index 5efeceef..8f70e9f4 100644
--- a/cmake/os.cmake
+++ b/cmake/os.cmake
@@ -1,4 +1,4 @@
-if (WIN32 OR CMAKE_SYSTEM_NAME MATCHES "MSYS")
+if (WIN32)
     set(XMRIG_OS_WIN ON)
 elseif (APPLE)
     set(XMRIG_OS_APPLE ON)