diff --git a/CMakeLists.txt b/CMakeLists.txt
index b9a9941a5..a890273da 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,18 +7,6 @@ cmake_policy(SET CMP0015 NEW)
 
 set(ETH_VERSION 0.2.1)
 set(ETH_BUILD_TYPE ${CMAKE_BUILD_TYPE})
-set(ETH_BUILD_PLATFORM ${CMAKE_SYSTEM_NAME})
-if (CMAKE_COMPILER_IS_MINGW)
-	set(ETH_BUILD_PLATFORM "${ETH_BUILD_PLATFORM}/mingw")
-elseif (CMAKE_COMPILER_IS_MSYS)
-	set(ETH_BUILD_PLATFORM "${ETH_BUILD_PLATFORM}/msys")
-elseif (CMAKE_COMPILER_IS_GNUCXX)
-	set(ETH_BUILD_PLATFORM "${ETH_BUILD_PLATFORM}/g++")
-elseif (CMAKE_COMPILER_IS_MSVC)
-	set(ETH_BUILD_PLATFORM "${ETH_BUILD_PLATFORM}/msvc")
-else ()
-	set(ETH_BUILD_PLATFORM "${ETH_BUILD_PLATFORM}/unknown")
-endif ()
 
 set(TARGET_PLATFORM CACHE STRING "linux")
 
@@ -47,8 +35,24 @@ if ("${TARGET_PLATFORM}" STREQUAL "w64")
 	set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
 
 	set(CMAKE_INSTALL_PREFIX	/usr/x86_64-w64-mingw32)
+	set(ETH_BUILD_PLATFORM "windows")
+else ()
+	set(ETH_BUILD_PLATFORM ${CMAKE_SYSTEM_NAME})
 endif()
 
+
+if (CMAKE_COMPILER_IS_MINGW)
+	set(ETH_BUILD_PLATFORM "${ETH_BUILD_PLATFORM}/mingw")
+elseif (CMAKE_COMPILER_IS_MSYS)
+	set(ETH_BUILD_PLATFORM "${ETH_BUILD_PLATFORM}/msys")
+elseif (CMAKE_COMPILER_IS_GNUCXX)
+	set(ETH_BUILD_PLATFORM "${ETH_BUILD_PLATFORM}/g++")
+elseif (CMAKE_COMPILER_IS_MSVC)
+	set(ETH_BUILD_PLATFORM "${ETH_BUILD_PLATFORM}/msvc")
+else ()
+	set(ETH_BUILD_PLATFORM "${ETH_BUILD_PLATFORM}/unknown")
+endif ()
+
 # Initialize CXXFLAGS.
 set(CMAKE_CXX_FLAGS                "-Wall -std=c++11")
 set(CMAKE_CXX_FLAGS_DEBUG          "-O0 -g")