diff --git a/cmake/ConfigOptions.cmake b/cmake/ConfigOptions.cmake
index 0408e79f2..2c14142e9 100644
--- a/cmake/ConfigOptions.cmake
+++ b/cmake/ConfigOptions.cmake
@@ -3,6 +3,9 @@ if((CMAKE_SYSTEM_PROCESSOR MATCHES "i386|i686|x86") AND (CMAKE_SIZEOF_VOID_P EQU
 	set(TARGET_ARCH "x86")
 elseif((CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|AMD64") AND (CMAKE_SIZEOF_VOID_P EQUAL 8))
 	set(TARGET_ARCH "x64")
+elseif((CMAKE_SYSTEM_PROCESSOR MATCHES "i386") AND (CMAKE_SIZEOF_VOID_P EQUAL 8) AND (APPLE))
+	# Mac is weird like that.
+	set(TARGET_ARCH "x64")
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "arm*")
 	set(TARGET_ARCH "ARM")
 endif()