diff --git a/toolchain-msvc.cmake b/toolchain-msvc.cmake
index 49267058fa2..4728d8379ff 100644
--- a/toolchain-msvc.cmake
+++ b/toolchain-msvc.cmake
@@ -32,7 +32,7 @@ SET(CMAKE_ASM_COMPILER ml)
 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_IDL_COMPILE_OBJECT "<CMAKE_IDL_COMPILER> <FLAGS> <DEFINES> /win32 /Dstrict_context_handle= /h <OBJECT> <SOURCE>")
 
 SET(CMAKE_ASM_COMPILE_OBJECT 
     "<CMAKE_C_COMPILER> <FLAGS> <DEFINES> /D__ASM__ /D_USE_ML /EP /c <SOURCE> > <OBJECT>.tmp"