diff --git a/src/racket/src/schpriv.h b/src/racket/src/schpriv.h
index 1cefd6b408..f1368ee924 100644
--- a/src/racket/src/schpriv.h
+++ b/src/racket/src/schpriv.h
@@ -120,6 +120,8 @@ int scheme_num_types(void);
 
 #if MZ_USE_NOINLINE
 # define MZ_DO_NOT_INLINE(decl) decl __attribute__ ((noinline));
+#elif _MSC_VER
+# define MZ_DO_NOT_INLINE(decl) __declspec(noinline) decl;
 #else
 # define MZ_DO_NOT_INLINE(decl)
 #endif