diff --git a/reactos/dll/opengl/mesa/main/CMakeLists.txt b/reactos/dll/opengl/mesa/main/CMakeLists.txt
index 52cb5954b9b..16d9709bb70 100644
--- a/reactos/dll/opengl/mesa/main/CMakeLists.txt
+++ b/reactos/dll/opengl/mesa/main/CMakeLists.txt
@@ -75,5 +75,6 @@ list(APPEND SOURCE
 )
 
 add_library(mesa_main STATIC ${SOURCE})
-
-allow_warnings(mesa_main)
+if(NOT MSVC)
+    allow_warnings(mesa_main)
+endif()
diff --git a/reactos/dll/opengl/mesa/swrast/CMakeLists.txt b/reactos/dll/opengl/mesa/swrast/CMakeLists.txt
index 81dee90b45b..344f3340bea 100644
--- a/reactos/dll/opengl/mesa/swrast/CMakeLists.txt
+++ b/reactos/dll/opengl/mesa/swrast/CMakeLists.txt
@@ -28,5 +28,6 @@ list(APPEND SOURCE
 )
 
 add_library(mesa_swrast STATIC ${SOURCE})
-
-allow_warnings(mesa_swrast)
+if(NOT MSVC)
+    allow_warnings(mesa_swrast)
+endif()