diff --git a/pkg.h b/pkg.h
index acafe89..dcf0b84 100644
--- a/pkg.h
+++ b/pkg.h
@@ -32,6 +32,7 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <string.h>
+#include <alloca.h>
 
 #ifndef BUFSIZ
 #define BUFSIZ	65535