diff --git a/libc-top-half/musl/src/internal/stdio_impl.h b/libc-top-half/musl/src/internal/stdio_impl.h
index 3eb420b..537e7a2 100644
--- a/libc-top-half/musl/src/internal/stdio_impl.h
+++ b/libc-top-half/musl/src/internal/stdio_impl.h
@@ -89,9 +89,11 @@ hidden int __towrite(FILE *);
 hidden void __stdio_exit(void);
 hidden void __stdio_exit_needed(void);
 
+#ifdef __wasilibc_unmodified_upstream // wasm has no "protected" visibility
 #if defined(__PIC__) && (100*__GNUC__+__GNUC_MINOR__ >= 303)
 __attribute__((visibility("protected")))
 #endif
+#endif
 int __overflow(FILE *, int), __uflow(FILE *);
 
 hidden int __fseeko(FILE *, off_t, int);