diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs
index 2628afd42379e..5dc586d3a2adf 100644
--- a/library/std/src/lib.rs
+++ b/library/std/src/lib.rs
@@ -366,6 +366,7 @@ extern crate unwind;
 
 #[doc(masked)]
 #[allow(unused_extern_crates)]
+#[cfg(feature = "miniz_oxide")]
 extern crate miniz_oxide;
 
 // During testing, this crate is not actually the "real" std library, but rather