diff --git a/c/Cargo.toml b/c/Cargo.toml
index 1fa983b3..ad5125f8 100644
--- a/c/Cargo.toml
+++ b/c/Cargo.toml
@@ -4,6 +4,9 @@ version = "0.1.0"
 authors = ["Patrick Walton <pcwalton@mimiga.net>"]
 edition = "2018"
 
+[features]
+capi = []
+
 [lib]
 crate-type = ["staticlib"]
 name = "pathfinder"