diff --git a/dlls/msvcp90/msvcp90_main.c b/dlls/msvcp90/msvcp90_main.c
index 9555d4815c4..9ce763ce084 100644
--- a/dlls/msvcp90/msvcp90_main.c
+++ b/dlls/msvcp90/msvcp90_main.c
@@ -30,7 +30,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(msvcp90);
 
 void* (__cdecl *MSVCRT_operator_new)(size_t);
 void (__cdecl *MSVCRT_operator_delete)(void*);
-void init_cxx_funcs(void)
+static void init_cxx_funcs(void)
 {
     HMODULE hmod = GetModuleHandleA("msvcrt.dll");