diff --git a/dlls/crtdll/crtdll.h b/dlls/crtdll/crtdll.h
index cf08ef082a6..45d5525b09a 100644
--- a/dlls/crtdll/crtdll.h
+++ b/dlls/crtdll/crtdll.h
@@ -205,7 +205,7 @@ struct _timeb
   INT16   dstflag;
 };
 
-typedef long fpos_t;
+typedef long CRTDLL_fpos_t;
 
 struct complex
 {
@@ -294,7 +294,7 @@ INT    __cdecl CRTDLL__fcloseall( VOID );
 LONG   __cdecl CRTDLL__lseek( INT fd, LONG offset, INT whence );
 LONG   __cdecl CRTDLL_fseek( CRTDLL_FILE* file, LONG offset, INT whence );
 VOID   __cdecl CRTDLL_rewind( CRTDLL_FILE* file );
-INT    __cdecl CRTDLL_fsetpos( CRTDLL_FILE* file, fpos_t *pos );
+INT    __cdecl CRTDLL_fsetpos( CRTDLL_FILE* file, CRTDLL_fpos_t *pos );
 LONG   __cdecl CRTDLL_ftell( CRTDLL_FILE* file );
 UINT   __cdecl CRTDLL_fwrite( LPCVOID ptr,INT size,INT nmemb,CRTDLL_FILE*file);
 INT    __cdecl CRTDLL_setbuf( CRTDLL_FILE* file, LPSTR buf );
diff --git a/dlls/crtdll/file.c b/dlls/crtdll/file.c
index 2b3151190b2..e7ec468ef89 100644
--- a/dlls/crtdll/file.c
+++ b/dlls/crtdll/file.c
@@ -1182,7 +1182,7 @@ INT __cdecl CRTDLL_fgetc( CRTDLL_FILE* file )
 /*********************************************************************
  *                  fgetpos       (CRTDLL.364)
  */
-INT __cdecl CRTDLL_fgetpos( CRTDLL_FILE* file, fpos_t *pos)
+INT __cdecl CRTDLL_fgetpos( CRTDLL_FILE* file, CRTDLL_fpos_t *pos)
 {
   *pos = CRTDLL__tell(file->_file);
   return (*pos == -1? -1 : 0);
@@ -1384,7 +1384,7 @@ CRTDLL_FILE* __cdecl CRTDLL_freopen(LPCSTR path, LPCSTR mode,CRTDLL_FILE* file)
 /*********************************************************************
  *                  fsetpos       (CRTDLL.380)
  */
-INT __cdecl CRTDLL_fsetpos( CRTDLL_FILE* file, fpos_t *pos)
+INT __cdecl CRTDLL_fsetpos( CRTDLL_FILE* file, CRTDLL_fpos_t *pos)
 {
   return CRTDLL__lseek(file->_file,*pos,SEEK_SET);
 }