diff --git a/dlls/msvcr100/msvcr100.spec b/dlls/msvcr100/msvcr100.spec
index 895298478d7..a2505ede122 100644
--- a/dlls/msvcr100/msvcr100.spec
+++ b/dlls/msvcr100/msvcr100.spec
@@ -1453,7 +1453,7 @@
 @ cdecl _vscwprintf_l(wstr ptr ptr) MSVCRT__vscwprintf_l
 @ cdecl _vscwprintf_p(wstr ptr) MSVCRT__vscwprintf_p
 @ cdecl _vscwprintf_p_l(wstr ptr ptr) MSVCRT__vscwprintf_p_l
-@ cdecl _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
+@ cdecl -norelay _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnprintf_c(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnprintf_c_l(ptr long str ptr ptr) MSVCRT_vsnprintf_l
 @ cdecl _vsnprintf_l(ptr long str ptr ptr) MSVCRT_vsnprintf_l
diff --git a/dlls/msvcr110/msvcr110.spec b/dlls/msvcr110/msvcr110.spec
index 66c6f65a9b9..4f48997183b 100644
--- a/dlls/msvcr110/msvcr110.spec
+++ b/dlls/msvcr110/msvcr110.spec
@@ -1810,7 +1810,7 @@
 @ cdecl _vscwprintf_l(wstr ptr ptr) MSVCRT__vscwprintf_l
 @ cdecl _vscwprintf_p(wstr ptr) MSVCRT__vscwprintf_p
 @ cdecl _vscwprintf_p_l(wstr ptr ptr) MSVCRT__vscwprintf_p_l
-@ cdecl _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
+@ cdecl -norelay _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnprintf_c(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnprintf_c_l(ptr long str ptr ptr) MSVCRT_vsnprintf_l
 @ cdecl _vsnprintf_l(ptr long str ptr ptr) MSVCRT_vsnprintf_l
diff --git a/dlls/msvcr120/msvcr120.spec b/dlls/msvcr120/msvcr120.spec
index 8c9d93fd81b..19d5bce0d3b 100644
--- a/dlls/msvcr120/msvcr120.spec
+++ b/dlls/msvcr120/msvcr120.spec
@@ -1828,7 +1828,7 @@
 @ cdecl _vscwprintf_l(wstr ptr ptr) MSVCRT__vscwprintf_l
 @ cdecl _vscwprintf_p(wstr ptr) MSVCRT__vscwprintf_p
 @ cdecl _vscwprintf_p_l(wstr ptr ptr) MSVCRT__vscwprintf_p_l
-@ cdecl _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
+@ cdecl -norelay _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnprintf_c(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnprintf_c_l(ptr long str ptr ptr) MSVCRT_vsnprintf_l
 @ cdecl _vsnprintf_l(ptr long str ptr ptr) MSVCRT_vsnprintf_l
diff --git a/dlls/msvcr120_app/msvcr120_app.spec b/dlls/msvcr120_app/msvcr120_app.spec
index ba1b351e899..538bbfdfa85 100644
--- a/dlls/msvcr120_app/msvcr120_app.spec
+++ b/dlls/msvcr120_app/msvcr120_app.spec
@@ -1522,7 +1522,7 @@
 @ cdecl _vscwprintf_l(wstr ptr ptr) msvcr120._vscwprintf_l
 @ cdecl _vscwprintf_p(wstr ptr) msvcr120._vscwprintf_p
 @ cdecl _vscwprintf_p_l(wstr ptr ptr) msvcr120._vscwprintf_p_l
-@ cdecl _vsnprintf(ptr long str ptr) msvcr120._vsnprintf
+@ cdecl -norelay _vsnprintf(ptr long str ptr) msvcr120._vsnprintf
 @ cdecl _vsnprintf_c(ptr long str ptr) msvcr120._vsnprintf_c
 @ cdecl _vsnprintf_c_l(ptr long str ptr ptr) msvcr120._vsnprintf_c_l
 @ cdecl _vsnprintf_l(ptr long str ptr ptr) msvcr120._vsnprintf_l
diff --git a/dlls/msvcr70/msvcr70.spec b/dlls/msvcr70/msvcr70.spec
index 1fefdaa59b1..a014cf50365 100644
--- a/dlls/msvcr70/msvcr70.spec
+++ b/dlls/msvcr70/msvcr70.spec
@@ -586,7 +586,7 @@
 @ cdecl _utime64(str ptr)
 @ cdecl _vscprintf(str ptr) MSVCRT__vscprintf
 @ cdecl _vscwprintf(wstr ptr) MSVCRT__vscwprintf
-@ cdecl _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
+@ cdecl -norelay _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnwprintf(ptr long wstr ptr) MSVCRT_vsnwprintf
 @ cdecl _waccess(wstr long) MSVCRT__waccess
 @ cdecl _wasctime(ptr) MSVCRT__wasctime
diff --git a/dlls/msvcr71/msvcr71.spec b/dlls/msvcr71/msvcr71.spec
index 7f4f35acb0b..21b73d3a75c 100644
--- a/dlls/msvcr71/msvcr71.spec
+++ b/dlls/msvcr71/msvcr71.spec
@@ -582,7 +582,7 @@
 @ cdecl _utime64(str ptr)
 @ cdecl _vscprintf(str ptr) MSVCRT__vscprintf
 @ cdecl _vscwprintf(wstr ptr) MSVCRT__vscwprintf
-@ cdecl _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
+@ cdecl -norelay _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnwprintf(ptr long wstr ptr) MSVCRT_vsnwprintf
 @ cdecl _waccess(wstr long) MSVCRT__waccess
 @ cdecl _wasctime(ptr) MSVCRT__wasctime
diff --git a/dlls/msvcr80/msvcr80.spec b/dlls/msvcr80/msvcr80.spec
index f8d0920c3c9..8c68ca437f9 100644
--- a/dlls/msvcr80/msvcr80.spec
+++ b/dlls/msvcr80/msvcr80.spec
@@ -1132,7 +1132,7 @@
 @ cdecl _vscwprintf_l(wstr ptr ptr) MSVCRT__vscwprintf_l
 @ cdecl _vscwprintf_p(wstr ptr) MSVCRT__vscwprintf_p
 @ cdecl _vscwprintf_p_l(wstr ptr ptr) MSVCRT__vscwprintf_p_l
-@ cdecl _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
+@ cdecl -norelay _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnprintf_c(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnprintf_c_l(ptr long str ptr ptr) MSVCRT_vsnprintf_l
 @ cdecl _vsnprintf_l(ptr long str ptr ptr) MSVCRT_vsnprintf_l
diff --git a/dlls/msvcr90/msvcr90.spec b/dlls/msvcr90/msvcr90.spec
index d2f469a77dc..2beb0e981ac 100644
--- a/dlls/msvcr90/msvcr90.spec
+++ b/dlls/msvcr90/msvcr90.spec
@@ -1108,7 +1108,7 @@
 @ cdecl _vscwprintf_l(wstr ptr ptr) MSVCRT__vscwprintf_l
 @ cdecl _vscwprintf_p(wstr ptr) MSVCRT__vscwprintf_p
 @ cdecl _vscwprintf_p_l(wstr ptr ptr) MSVCRT__vscwprintf_p_l
-@ cdecl _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
+@ cdecl -norelay _vsnprintf(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnprintf_c(ptr long str ptr) MSVCRT_vsnprintf
 @ cdecl _vsnprintf_c_l(ptr long str ptr ptr) MSVCRT_vsnprintf_l
 @ cdecl _vsnprintf_l(ptr long str ptr ptr) MSVCRT_vsnprintf_l