diff --git a/userspace/libraries/LibC/include/assert.h b/userspace/libraries/LibC/include/assert.h
index 77d49bfa..da43af84 100644
--- a/userspace/libraries/LibC/include/assert.h
+++ b/userspace/libraries/LibC/include/assert.h
@@ -13,7 +13,8 @@
 
 __BEGIN_DECLS
 
-[[noreturn]] void __assert_fail(const char*, const char*, int, const char*);
+__attribute__((noreturn))
+void __assert_fail(const char*, const char*, int, const char*);
 
 __END_DECLS
 
diff --git a/userspace/libraries/LibC/include/stdint.h b/userspace/libraries/LibC/include/stdint.h
new file mode 100644
index 00000000..e642471a
--- /dev/null
+++ b/userspace/libraries/LibC/include/stdint.h
@@ -0,0 +1,5 @@
+#ifdef __TINYC__
+#include <stddef.h>
+#else
+#include_next <stdint.h>
+#endif