diff --git a/cmake/CompilerConfiguration.cmake b/cmake/CompilerConfiguration.cmake
index a9f0dceb..93241245 100644
--- a/cmake/CompilerConfiguration.cmake
+++ b/cmake/CompilerConfiguration.cmake
@@ -17,9 +17,12 @@
 if (CMAKE_BUILD_TYPE MATCHES "Debug" AND CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND CMAKE_SYSTEM_NAME MATCHES "Linux")
     set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG} -coverage")
     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Ofast -coverage")
-else()
+elseif(NOT CMAKE_SYSTEM_NAME MATCHES "Windows")
     set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}")
     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Ofast")
+else()
+    set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}")
+    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
 endif()
 
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