diff --git a/src/lisp/lib/std.h b/src/lisp/lib/std.h
index 9070de8..a117b5d 100644
--- a/src/lisp/lib/std.h
+++ b/src/lisp/lib/std.h
@@ -8,3 +8,4 @@
 
 void add_function(struct environment *env, char *name, void *func, int nargs, enum namespace ns);
 void load_std(struct environment *env);
+bool load_library(struct environment *env, char *name);