diff --git a/cmake/modules/DetectMachine.cmake b/cmake/modules/DetectMachine.cmake
index 14efad76a..a529d3732 100644
--- a/cmake/modules/DetectMachine.cmake
+++ b/cmake/modules/DetectMachine.cmake
@@ -16,8 +16,8 @@ MESSAGE("PROCESSOR: ${CMAKE_SYSTEM_PROCESSOR}")
 SET(LMMS_HOST_X86 FALSE)
 SET(LMMS_HOST_X86_64 FALSE)
 
-IF(MSVC)
-    STRING(REGEX MATCH "86_64|amd64|AMD64" WIN64 "${CMAKE_SYSTEM_PROCESSOR}")
+IF(MSVC AND CMAKE_SIZEOF_VOID_P EQUAL 8)
+    SET(WIN64 ON)
 ENDIF()
 
 IF(WIN32)