diff --git a/src/de.rs b/src/de.rs
index c71b796..7f4b94c 100644
--- a/src/de.rs
+++ b/src/de.rs
@@ -2286,6 +2286,7 @@ where
 /// is wrong with the data, for example required struct fields are missing from
 /// the JSON map or some number is too big to fit in the expected primitive
 /// type.
+#[cfg(feature = "std")]
 pub fn from_reader<R, T>(rdr: R) -> Result<T>
 where
     R: io::Read,
diff --git a/src/lib.rs b/src/lib.rs
index 4d6512d..4396698 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -401,8 +401,11 @@ mod lib {
 
 ////////////////////////////////////////////////////////////////////////////////
 
+#[cfg(feature = "std")]
 #[doc(inline)]
-pub use self::de::{from_reader, from_slice, from_str, Deserializer, StreamDeserializer};
+pub use self::de::from_reader;
+#[doc(inline)]
+pub use self::de::{from_slice, from_str, Deserializer, StreamDeserializer};
 #[doc(inline)]
 pub use self::error::{Error, Result};
 #[doc(inline)]