diff --git a/src/estr.rs b/src/estr.rs
index f75b1da..95ffb1d 100644
--- a/src/estr.rs
+++ b/src/estr.rs
@@ -4,5 +4,7 @@ mod structs;
 pub use structs::{CommaVec, SemiVec};
 
 pub use estring::core::EString;
+#[cfg(feature = "low-level")]
 pub use estring::low::*;
+#[cfg(feature = "structs")]
 pub use estring::structs::*;