diff --git a/hercules_rt_proc/src/lib.rs b/hercules_rt_proc/src/lib.rs
index 1aaa640fa18cdcd76407f332bc9aa023983dfc7b..0465a2584d3c266e77415afcdcc90be1276481f9 100644
--- a/hercules_rt_proc/src/lib.rs
+++ b/hercules_rt_proc/src/lib.rs
@@ -17,7 +17,7 @@ use std::path::Path;
 use proc_macro::*;
 
 use self::hercules_cg::*;
-use self::hercules_ir::{DynamicConstant, DynamicConstantID};
+use self::hercules_ir::{DynamicConstant, DynamicConstantID, ID};
 
 /*
  * Convert schedule IR types to the Rust types generated in the interface.