diff --git a/openssl-sys/build/main.rs b/openssl-sys/build/main.rs
index c5ed22961..50ecc0f08 100644
--- a/openssl-sys/build/main.rs
+++ b/openssl-sys/build/main.rs
@@ -74,7 +74,7 @@ fn check_ssl_kind() {
 }
 
 fn main() {
-    println!("cargo:rustc-check-cfg=cfg(osslconf, values(\"OPENSSL_THREADS\", \"OPENSSL_NO_OCB\", \"OPENSSL_NO_SM4\", \"OPENSSL_NO_SEED\", \"OPENSSL_NO_CHACHA\", \"OPENSSL_NO_CAST\", \"OPENSSL_NO_IDEA\", \"OPENSSL_NO_CAMELLIA\", \"OPENSSL_NO_RC4\", \"OPENSSL_NO_BF\", \"OPENSSL_NO_PSK\", \"OPENSSL_NO_DEPRECATED_3_0\", \"OPENSSL_NO_SCRYPT\", \"OPENSSL_NO_SM3\", \"OPENSSL_NO_RMD160\", \"OPENSSL_NO_EC2M\", \"OPENSSL_NO_OCSP\", \"OPENSSL_NO_CMS\", \"OPENSSL_NO_COMP\", \"OPENSSL_NO_SOCK\", \"OPENSSL_NO_STDIO\", \"OPENSSL_NO_EC\", \"OPENSSL_NO_SSL3_METHOD\", \"OPENSSL_NO_KRB5\", \"OPENSSL_NO_TLSEXT\", \"OPENSSL_NO_SRP\", \"OPENSSL_NO_RFC3779\", \"OPENSSL_NO_SHA\", \"OPENSSL_NO_NEXTPROTONEG\", \"OPENSSL_NO_ENGINE\", \"OPENSSL_NO_BUF_FREELISTS\"))");
+    println!("cargo:rustc-check-cfg=cfg(osslconf, values(\"OPENSSL_NO_OCB\", \"OPENSSL_NO_SM4\", \"OPENSSL_NO_SEED\", \"OPENSSL_NO_CHACHA\", \"OPENSSL_NO_CAST\", \"OPENSSL_NO_IDEA\", \"OPENSSL_NO_CAMELLIA\", \"OPENSSL_NO_RC4\", \"OPENSSL_NO_BF\", \"OPENSSL_NO_PSK\", \"OPENSSL_NO_DEPRECATED_3_0\", \"OPENSSL_NO_SCRYPT\", \"OPENSSL_NO_SM3\", \"OPENSSL_NO_RMD160\", \"OPENSSL_NO_EC2M\", \"OPENSSL_NO_OCSP\", \"OPENSSL_NO_CMS\", \"OPENSSL_NO_COMP\", \"OPENSSL_NO_SOCK\", \"OPENSSL_NO_STDIO\", \"OPENSSL_NO_EC\", \"OPENSSL_NO_SSL3_METHOD\", \"OPENSSL_NO_KRB5\", \"OPENSSL_NO_TLSEXT\", \"OPENSSL_NO_SRP\", \"OPENSSL_NO_RFC3779\", \"OPENSSL_NO_SHA\", \"OPENSSL_NO_NEXTPROTONEG\", \"OPENSSL_NO_ENGINE\", \"OPENSSL_NO_BUF_FREELISTS\"))");
 
     println!("cargo:rustc-check-cfg=cfg(openssl)");
     println!("cargo:rustc-check-cfg=cfg(libressl)");
diff --git a/openssl-sys/build/run_bindgen.rs b/openssl-sys/build/run_bindgen.rs
index db31cbb63..27bd482b3 100644
--- a/openssl-sys/build/run_bindgen.rs
+++ b/openssl-sys/build/run_bindgen.rs
@@ -64,7 +64,7 @@ const INCLUDES: &str = "
 #include <openssl/poly1305.h>
 #endif
 
-#if OPENSSL_VERSION_NUMBER >= 0x30200000 && defined(OPENSSL_THREADS)
+#if OPENSSL_VERSION_NUMBER >= 0x30200000
 #include <openssl/thread.h>
 #endif
 ";
diff --git a/openssl-sys/src/handwritten/mod.rs b/openssl-sys/src/handwritten/mod.rs
index 35776486d..47b3360fd 100644
--- a/openssl-sys/src/handwritten/mod.rs
+++ b/openssl-sys/src/handwritten/mod.rs
@@ -29,7 +29,7 @@ pub use self::sha::*;
 pub use self::srtp::*;
 pub use self::ssl::*;
 pub use self::stack::*;
-#[cfg(all(ossl320, osslconf = "OPENSSL_THREADS"))]
+#[cfg(ossl320)]
 pub use self::thread::*;
 pub use self::tls1::*;
 pub use self::types::*;
@@ -68,7 +68,7 @@ mod sha;
 mod srtp;
 mod ssl;
 mod stack;
-#[cfg(all(ossl320, osslconf = "OPENSSL_THREADS"))]
+#[cfg(ossl320)]
 mod thread;
 mod tls1;
 mod types;
diff --git a/systest/build.rs b/systest/build.rs
index dde28b500..fc970f410 100644
--- a/systest/build.rs
+++ b/systest/build.rs
@@ -86,7 +86,6 @@ fn main() {
             cfg.header("openssl/provider.h");
         }
         if version >= 0x30200000 {
-            // thread is present as a header even if OPENSSL_THREADS is not defined
             cfg.header("openssl/thread.h");
         }
     }