diff --git a/include/compat/osx/malloc.h b/include/compat/osx/malloc.h
index 448e0a8..8e725c5 100644
--- a/include/compat/osx/malloc.h
+++ b/include/compat/osx/malloc.h
@@ -1 +1,2 @@
 #include <malloc/malloc.h>
+#include <alloca.h>