diff --git a/reactos/lib/newinflib/CMakeLists.txt b/reactos/lib/newinflib/CMakeLists.txt
index 374b4af88d3..08e569606b7 100644
--- a/reactos/lib/newinflib/CMakeLists.txt
+++ b/reactos/lib/newinflib/CMakeLists.txt
@@ -20,8 +20,7 @@ else()
         infhostput.c
         infhostrtl.c)
 
-    add_definitions(-D__NO_CTYPE_INLINES -DINFLIB_HOST)
-
+    add_definitions(-D__NO_CTYPE_INLINES -DINFLIB_HOST -D_CRT_NON_CONFORMING_SWPRINTFS)
     add_library(inflibhost ${GLOBAL_FILES} ${SOURCE})
     if(NOT MSVC)
         add_target_compile_flags(inflibhost "-Wpointer-arith -Wwrite-strings")