diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c
index 3ab18e8ac8e..bc1305e5228 100644
--- a/dlls/msvcrt/file.c
+++ b/dlls/msvcrt/file.c
@@ -5108,7 +5108,7 @@ static int puts_clbk_file_w(void *file, int len, const wchar_t *str)
 static int vfprintf_helper(DWORD options, FILE* file, const char *format,
         _locale_t locale, __ms_va_list valist)
 {
-    printf_arg args_ctx[MSVCRT__ARGMAX+1];
+    printf_arg args_ctx[_ARGMAX+1];
     BOOL tmp_buf;
     int ret;
 
@@ -5140,7 +5140,7 @@ static int vfprintf_helper(DWORD options, FILE* file, const char *format,
 static int vfwprintf_helper(DWORD options, FILE* file, const wchar_t *format,
         _locale_t locale, __ms_va_list valist)
 {
-    printf_arg args_ctx[MSVCRT__ARGMAX+1];
+    printf_arg args_ctx[_ARGMAX+1];
     BOOL tmp_buf;
     int ret;
 
diff --git a/dlls/msvcrt/msvcrt.h b/dlls/msvcrt/msvcrt.h
index bfa01e21901..5b1e5ac40b0 100644
--- a/dlls/msvcrt/msvcrt.h
+++ b/dlls/msvcrt/msvcrt.h
@@ -886,7 +886,6 @@ int fpnum_double(struct fpnum*, double*) DECLSPEC_HIDDEN;
 #define MSVCRT_CHECK_PMT_ERR(x,err) ((x) || (MSVCRT_INVALID_PMT( 0, (err) ), FALSE))
 #define MSVCRT_CHECK_PMT(x)         MSVCRT_CHECK_PMT_ERR((x), EINVAL)
 
-#define MSVCRT__ARGMAX 100
 typedef int (*puts_clbk_a)(void*, int, const char*);
 typedef int (*puts_clbk_w)(void*, int, const wchar_t*);
 typedef union _printf_arg
diff --git a/dlls/msvcrt/printf.h b/dlls/msvcrt/printf.h
index 72dffb30e37..826e8e76805 100644
--- a/dlls/msvcrt/printf.h
+++ b/dlls/msvcrt/printf.h
@@ -1225,7 +1225,7 @@ static printf_arg arg_clbk_type(void *ctx, int pos, int type, __ms_va_list *vali
     } else
         args[0].get_int |= TYPE_CLBK_POSITIONAL;
 
-    if(pos<1 || pos>MSVCRT__ARGMAX)
+    if(pos<1 || pos>_ARGMAX)
         args[0].get_int |= TYPE_CLBK_ERROR_POS;
     else if(args[pos].get_int && args[pos].get_int!=type)
         args[0].get_int |= TYPE_CLBK_ERROR_TYPE;
@@ -1252,7 +1252,7 @@ int FUNC_NAME(create_positional_ctx)(void *args_ctx, const APICHAR *format, __ms
     if(args[0].get_int != TYPE_CLBK_POSITIONAL)
         return -1;
 
-    for(i=MSVCRT__ARGMAX; i>0; i--)
+    for(i=_ARGMAX; i>0; i--)
         if(args[i].get_int)
             break;
 
diff --git a/dlls/msvcrt/wcs.c b/dlls/msvcrt/wcs.c
index b36d832a10a..8b43dcadf95 100644
--- a/dlls/msvcrt/wcs.c
+++ b/dlls/msvcrt/wcs.c
@@ -1159,7 +1159,7 @@ int CDECL MSVCRT__vscprintf_l(const char *format,
 int CDECL MSVCRT__vscprintf_p_l(const char *format,
         _locale_t locale, __ms_va_list args)
 {
-    printf_arg args_ctx[MSVCRT__ARGMAX+1];
+    printf_arg args_ctx[_ARGMAX+1];
     struct _str_ctx_a puts_ctx = {INT_MAX, NULL};
     int ret;
 
@@ -1337,7 +1337,7 @@ int CDECL MSVCRT_vswprintf_c(wchar_t *str, size_t len,
 static int MSVCRT_vswprintf_p_l_opt(wchar_t *buffer, size_t length,
         const wchar_t *format, DWORD options, _locale_t locale, __ms_va_list args)
 {
-    printf_arg args_ctx[MSVCRT__ARGMAX+1];
+    printf_arg args_ctx[_ARGMAX+1];
     struct _str_ctx_w puts_ctx = {length, buffer};
     int ret;
 
@@ -1716,7 +1716,7 @@ static int MSVCRT_vsprintf_p_l_opt(char *buffer, size_t length, const char *form
         DWORD options, _locale_t locale, __ms_va_list args)
 {
     static const char nullbyte = '\0';
-    printf_arg args_ctx[MSVCRT__ARGMAX+1];
+    printf_arg args_ctx[_ARGMAX+1];
     struct _str_ctx_a puts_ctx = {length, buffer};
     int ret;