diff --git a/lib/inflib/CMakeLists.txt b/lib/inflib/CMakeLists.txt
index 390c81b4068..e48cf0809a7 100644
--- a/lib/inflib/CMakeLists.txt
+++ b/lib/inflib/CMakeLists.txt
@@ -12,7 +12,9 @@ else()
 file(GLOB_RECURSE SOURCE "infhost*.c")
 
 add_definitions(-D__NO_CTYPE_INLINES -DINFLIB_HOST)
+if(NOT MSVC)
 add_definitions(-Wpointer-arith -Wconversion -Wstrict-prototypes -Wmissing-prototypes)
+endif()
 add_library(inflibhost ${GLOBAL_FILES} ${SOURCE})
 
 endif()
diff --git a/lib/newinflib/CMakeLists.txt b/lib/newinflib/CMakeLists.txt
index 0b1a0b5aa2b..0a2de69a1e5 100644
--- a/lib/newinflib/CMakeLists.txt
+++ b/lib/newinflib/CMakeLists.txt
@@ -12,7 +12,9 @@ else()
 file(GLOB_RECURSE SOURCE "infhost*.c")
 
 add_definitions(-DWINE_UNICODE_API= -D__NO_CTYPE_INLINES -DINFLIB_HOST -DUSE_HOST_WCSFUNCS)
+if(NOT MSVC)
 add_definitions(-Wpointer-arith -Wwrite-strings)
+endif()
 add_library(newinflibhost ${GLOBAL_FILES} ${SOURCE})
 target_link_libraries(newinflibhost unicode)