diff --git a/dlls/msvcr100/msvcr100.spec b/dlls/msvcr100/msvcr100.spec
index 1531da9167f..19826680977 100644
--- a/dlls/msvcr100/msvcr100.spec
+++ b/dlls/msvcr100/msvcr100.spec
@@ -644,7 +644,8 @@
 @ cdecl __p__wenviron() msvcrt.__p__wenviron
 @ cdecl __p__wpgmptr() msvcrt.__p__wpgmptr
 @ cdecl __pctype_func() msvcrt.__pctype_func
-### extern __pioinfo #don't forward to msvcrt.__pioinfo, it has different size
+#FIXME: add correct __pioinfo implementation
+@ extern __pioinfo msvcrt.__pioinfo
 @ stub __pwctype_func
 @ cdecl __pxcptinfoptrs() msvcrt.__pxcptinfoptrs
 @ stub __report_gsfailure
diff --git a/dlls/msvcr110/msvcr110.spec b/dlls/msvcr110/msvcr110.spec
index c851928dee4..62631f7fffb 100644
--- a/dlls/msvcr110/msvcr110.spec
+++ b/dlls/msvcr110/msvcr110.spec
@@ -997,7 +997,8 @@
 @ cdecl __p__wenviron() msvcrt.__p__wenviron
 @ cdecl __p__wpgmptr() msvcrt.__p__wpgmptr
 @ cdecl __pctype_func() msvcrt.__pctype_func
-### extern __pioinfo #don't forward to msvcrt.__pioinfo, it has different size
+#FIXME: add correct __pioinfo implementation
+@ extern __pioinfo msvcrt.__pioinfo
 @ stub __pwctype_func
 @ cdecl __pxcptinfoptrs() msvcrt.__pxcptinfoptrs
 @ stub __report_gsfailure
diff --git a/dlls/msvcr80/msvcr80.spec b/dlls/msvcr80/msvcr80.spec
index e33c6943134..fb76449135b 100644
--- a/dlls/msvcr80/msvcr80.spec
+++ b/dlls/msvcr80/msvcr80.spec
@@ -284,7 +284,8 @@
 @ cdecl __p__winver() msvcrt.__p__winver
 @ cdecl __p__wpgmptr() msvcrt.__p__wpgmptr
 @ cdecl __pctype_func() msvcrt.__pctype_func
-### extern __pioinfo #don't forward to msvcrt.__pioinfo, it has different size
+#FIXME: add correct __pioinfo implementation
+@ extern __pioinfo msvcrt.__pioinfo
 @ stub __pwctype_func
 @ cdecl __pxcptinfoptrs() msvcrt.__pxcptinfoptrs
 @ stub __report_gsfailure
diff --git a/dlls/msvcr90/msvcr90.spec b/dlls/msvcr90/msvcr90.spec
index fb549cffd5b..aec46f71b59 100644
--- a/dlls/msvcr90/msvcr90.spec
+++ b/dlls/msvcr90/msvcr90.spec
@@ -276,7 +276,8 @@
 @ cdecl __p__wenviron() msvcrt.__p__wenviron
 @ cdecl __p__wpgmptr() msvcrt.__p__wpgmptr
 @ cdecl __pctype_func() msvcrt.__pctype_func
-### extern __pioinfo #don't forward to msvcrt.__pioinfo, it has different size
+#FIXME: add correct __pioinfo implementation
+@ extern __pioinfo msvcrt.__pioinfo
 @ stub __pwctype_func
 @ cdecl __pxcptinfoptrs() msvcrt.__pxcptinfoptrs
 @ stub __report_gsfailure