diff --git a/pcid/src/config.rs b/pcid/src/config.rs
index ee7756c82e..74ba8b4eaa 100644
--- a/pcid/src/config.rs
+++ b/pcid/src/config.rs
@@ -1,3 +1,4 @@
+use std::collections::BTreeMap;
 use std::ops::Range;
 
 #[derive(Debug, Default, Deserialize)]