diff --git a/dlls/msvcr71/msvcr71.spec b/dlls/msvcr71/msvcr71.spec
index e39f0fb749c..65e1dff1d69 100644
--- a/dlls/msvcr71/msvcr71.spec
+++ b/dlls/msvcr71/msvcr71.spec
@@ -111,7 +111,7 @@
 @ cdecl __fpecode() msvcrt.__fpecode
 @ cdecl __getmainargs(ptr ptr ptr long ptr) msvcrt.__getmainargs
 @ extern __initenv msvcrt.__initenv
-@ stub __iob_func
+@ cdecl __iob_func() msvcrt.__iob_func
 @ cdecl __isascii(long) msvcrt.__isascii
 @ cdecl __iscsym(long) msvcrt.__iscsym
 @ cdecl __iscsymf(long) msvcrt.__iscsymf
diff --git a/dlls/msvcrt/msvcrt.spec b/dlls/msvcrt/msvcrt.spec
index c92733db5bf..23b6acdbbf5 100644
--- a/dlls/msvcrt/msvcrt.spec
+++ b/dlls/msvcrt/msvcrt.spec
@@ -97,6 +97,7 @@
 @ stub __get_app_type
 @ cdecl __getmainargs(ptr ptr ptr long ptr)
 @ extern __initenv MSVCRT___initenv
+@ cdecl __iob_func() __p__iob
 @ cdecl __isascii(long) MSVCRT___isascii
 @ cdecl __iscsym(long) MSVCRT___iscsym
 @ cdecl __iscsymf(long) MSVCRT___iscsymf