diff --git a/openssl-sys/src/evp.rs b/openssl-sys/src/evp.rs
index 41ef6c30..62a6eee8 100644
--- a/openssl-sys/src/evp.rs
+++ b/openssl-sys/src/evp.rs
@@ -403,7 +403,7 @@ extern "C" {
 
     pub fn EVP_PKEY_keygen_init(ctx: *mut EVP_PKEY_CTX) -> c_int;
     pub fn EVP_PKEY_keygen(ctx: *mut EVP_PKEY_CTX, key: *mut *mut EVP_PKEY) -> c_int;
-    pub fn EVP_PKCS82PKEY(p8: *const PKCS8_PRIV_KEY_INFO) -> *mut EVP_PKEY;
+    pub fn EVP_PKCS82PKEY(p8: *mut PKCS8_PRIV_KEY_INFO) -> *mut EVP_PKEY;
 }
 
 extern "C" {