diff --git a/libcxx/include/stdio.h b/libcxx/include/stdio.h
--- a/libcxx/include/stdio.h
+++ b/libcxx/include/stdio.h
@@ -115,6 +115,8 @@
 #undef clearerr
 #undef feof
 #undef ferror
+#undef putchar
+#undef getchar
 
 #endif