diff --git a/toolchain-msvc.cmake b/toolchain-msvc.cmake
index 2fdc8950628..49267058fa2 100644
--- a/toolchain-msvc.cmake
+++ b/toolchain-msvc.cmake
@@ -34,6 +34,10 @@ SET(CMAKE_IDL_COMPILER midl)
 SET(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> <DEFINES> /I${REACTOS_SOURCE_DIR}/include/psdk /I${REACTOS_BINARY_DIR}/include/psdk /I${REACTOS_SOURCE_DIR}/include /I${REACTOS_SOURCE_DIR}/include/reactos /I${REACTOS_BINARY_DIR}/include/reactos /I${REACTOS_SOURCE_DIR}/include/reactos/wine /I${REACTOS_SOURCE_DIR}/include/crt /I${REACTOS_SOURCE_DIR}/include/crt/mingw32 /fo <OBJECT> <SOURCE>")
 SET(CMAKE_IDL_COMPILE_OBJECT "<CMAKE_IDL_COMPILER> <FLAGS> <DEFINES> /win32 /h <OBJECT> <SOURCE>")
 
+SET(CMAKE_ASM_COMPILE_OBJECT 
+    "<CMAKE_C_COMPILER> <FLAGS> <DEFINES> /D__ASM__ /D_USE_ML /EP /c <SOURCE> > <OBJECT>.tmp"
+    "<CMAKE_ASM_COMPILER> /Fo<OBJECT> /c /Ta <OBJECT>.tmp")
+
 set(CMAKE_C_FLAGS_INIT "/DWIN32 /D_WINDOWS /W1 /Zm1000")
 set(CMAKE_C_FLAGS_DEBUG_INIT "/D_DEBUG /MDd /Zi  /Ob0 /Od")
 SET(CMAKE_CXX_FLAGS_DEBUG_INIT "/D_DEBUG /MDd /Zi /Ob0 /Od")