diff --git a/luad/stack.d b/luad/stack.d
index d1cf6f5..0692e21 100644
--- a/luad/stack.d
+++ b/luad/stack.d
@@ -58,6 +58,7 @@ module luad.stack;
 import std.range;
 import std.traits;
 import std.typecons;
+import core.stdc.string;
 
 import luad.c.all;