diff --git a/src/ft.c b/src/ft.c
index 0d6be4d4..c646ef8a 100644
--- a/src/ft.c
+++ b/src/ft.c
@@ -24,6 +24,7 @@
 #include <config.h>
 #endif
 
+#include <alloca.h>
 #include <ell/ell.h>
 
 #include "src/ie.h"