diff --git a/dll/apisets/CMakeLists.txt b/dll/apisets/CMakeLists.txt
index a08f9f12d3..348cf2d4ac 100644
--- a/dll/apisets/CMakeLists.txt
+++ b/dll/apisets/CMakeLists.txt
@@ -27,7 +27,7 @@ function (add_apiset apiset_name baseaddress)
     if(NOT MSVC)
         target_compile_options(${apiset_name} PRIVATE -fno-builtin)
     else()
-        target_compile_options(${apiset_name} PRIVATE /wd4026 /wd4273)
+        target_compile_options(${apiset_name} PRIVATE /wd4026 /wd4273 /Oi-)
     endif()
 
     add_importlibs(${apiset_name} ${ARGN} ntdll)
diff --git a/dll/apisets/CMakeLists.txt.in b/dll/apisets/CMakeLists.txt.in
index 12ca868f64..3ec26d4928 100644
--- a/dll/apisets/CMakeLists.txt.in
+++ b/dll/apisets/CMakeLists.txt.in
@@ -27,7 +27,7 @@ function (add_apiset apiset_name baseaddress)
     if(NOT MSVC)
         target_compile_options(${apiset_name} PRIVATE -fno-builtin)
     else()
-        target_compile_options(${apiset_name} PRIVATE /wd4026 /wd4273)
+        target_compile_options(${apiset_name} PRIVATE /wd4026 /wd4273 /Oi-)
     endif()
 
     add_importlibs(${apiset_name} ${ARGN} ntdll)