diff --git a/pbkdf2/Cargo.toml b/pbkdf2/Cargo.toml
index b16d3714..a22565d3 100644
--- a/pbkdf2/Cargo.toml
+++ b/pbkdf2/Cargo.toml
@@ -32,7 +32,6 @@ belt-hash = "0.2.0-rc.3"
 
 [features]
 default = ["hmac"]
-std = []
 getrandom = ["simple", "password-hash/getrandom"]
 simple = ["getrandom", "hmac", "password-hash", "sha2"]