diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c
index 055ccac..ea60d8a 100644
--- a/dlls/msvcrt/file.c
+++ b/dlls/msvcrt/file.c
@@ -2276,7 +2276,7 @@ char * CDECL MSVCRT_fgets(char *s, int size, MSVCRT_FILE* file)
  */
 MSVCRT_wint_t CDECL MSVCRT_fgetwc(MSVCRT_FILE* file)
 {
-  char c;
+  signed char c;
 
   if (!(MSVCRT_fdesc[file->_file].wxflag & WX_TEXT))
     {