diff --git a/mingw-w64-headers/crt/io.h b/mingw-w64-headers/crt/io.h
index 86e1c63..8986931 100644
--- a/mingw-w64-headers/crt/io.h
+++ b/mingw-w64-headers/crt/io.h
@@ -205,7 +205,9 @@
   _off64_t lseek64(int fd,_off64_t offset, int whence);
   _CRTIMP char *__cdecl _mktemp(char *_TemplateName) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
   _SECIMP errno_t __cdecl _mktemp_s (char *_TemplateName,size_t _Size);
+#ifdef _CRT_USE_WINAPI_FAMILY_DESKTOP_APP
   _CRTIMP int __cdecl _pipe(int *_PtHandles,unsigned int _PipeSize,int _TextMode);
+#endif /* _CRT_USE_WINAPI_FAMILY_DESKTOP_APP */
   _CRTIMP int __cdecl _read(int _FileHandle,void *_DstBuf,unsigned int _MaxCharCount);
 
 #ifndef _CRT_DIRECTORY_DEFINED
diff --git a/mingw-w64-headers/crt/stdio.h b/mingw-w64-headers/crt/stdio.h
index d36ea64..4425d4b 100644
--- a/mingw-w64-headers/crt/stdio.h
+++ b/mingw-w64-headers/crt/stdio.h
@@ -706,12 +706,14 @@
 #define _CRT_PERROR_DEFINED
   void __cdecl perror(const char *_ErrMsg);
 #endif
+#ifdef _CRT_USE_WINAPI_FAMILY_DESKTOP_APP
   _CRTIMP int __cdecl _pclose(FILE *_File);
   _CRTIMP FILE *__cdecl _popen(const char *_Command,const char *_Mode);
 #if !defined(NO_OLDNAMES) && !defined(popen)
 #define popen	_popen
 #define pclose	_pclose
 #endif
+#endif /* _CRT_USE_WINAPI_FAMILY_DESKTOP_APP */
   int __cdecl putc(int _Ch,FILE *_File);
   int __cdecl putchar(int _Ch);
   int __cdecl puts(const char *_Str);