diff --git a/src/keypair.rs b/src/keypair.rs
index f4024a1..c12f751 100644
--- a/src/keypair.rs
+++ b/src/keypair.rs
@@ -125,6 +125,7 @@ impl Keypair {
     /// The standard hash function used for most ed25519 libraries is SHA-512,
     /// which is available with `use sha2::Sha512` as in the example above.
     /// Other suitable hash functions include Keccak-512 and Blake2b-512.
+    #[cfg(feature = "rand")]
     pub fn generate<R>(csprng: &mut R) -> Keypair
     where
         R: CryptoRng + RngCore,
diff --git a/src/secret.rs b/src/secret.rs
index 1d421b6..64c9d1f 100644
--- a/src/secret.rs
+++ b/src/secret.rs
@@ -165,6 +165,7 @@ impl SecretKey {
     /// # Input
     ///
     /// A CSPRNG with a `fill_bytes()` method, e.g. `rand::OsRng`
+    #[cfg(feature = "rand")]
     pub fn generate<T>(csprng: &mut T) -> SecretKey
     where
         T: CryptoRng + RngCore,