diff --git a/userspace/libraries/LibC/wchar.cpp b/userspace/libraries/LibC/wchar.cpp
index 12d10b4e..299fe79d 100644
--- a/userspace/libraries/LibC/wchar.cpp
+++ b/userspace/libraries/LibC/wchar.cpp
@@ -24,6 +24,10 @@ int wcwidth(wchar_t wc)
 	return wc != '\0';
 }
 
+wchar_t* wcstok(wchar_t* __restrict, const wchar_t* __restrict, wchar_t** __restrict) { ASSERT_NOT_REACHED(); }
+long wcstol(const wchar_t* __restrict, wchar_t** __restrict, int) { ASSERT_NOT_REACHED(); }
+int swprintf(wchar_t* __restrict, size_t, const wchar_t* __restrict, ...) { ASSERT_NOT_REACHED(); }
+
 size_t wcrtomb(char* __restrict s, wchar_t ws, mbstate_t* __restrict ps)
 {
 	(void)ps;