diff --git a/openssl-sys/build/expando.c b/openssl-sys/build/expando.c
index 5d003d9022..cd7456b4f0 100644
--- a/openssl-sys/build/expando.c
+++ b/openssl-sys/build/expando.c
@@ -111,6 +111,10 @@ RUST_CONF_OPENSSL_NO_SSL3_METHOD
 RUST_CONF_OPENSSL_NO_TLSEXT
 #endif
 
+#ifdef OPENSSL_NO_SOCK
+RUST_CONF_OPENSSL_NO_SOCK
+#endif
+
 #ifdef OPENSSL_NO_STDIO
 RUST_CONF_OPENSSL_NO_STDIO
 #endif
diff --git a/openssl-sys/src/handwritten/bio.rs b/openssl-sys/src/handwritten/bio.rs
index 7d97522251..5f65ec5e5c 100644
--- a/openssl-sys/src/handwritten/bio.rs
+++ b/openssl-sys/src/handwritten/bio.rs
@@ -58,6 +58,7 @@ const_ptr_api! {
 }
 
 extern "C" {
+    #[cfg(not(osslconf = "OPENSSL_NO_SOCK"))]
     pub fn BIO_new_socket(sock: c_int, close_flag: c_int) -> *mut BIO;
 
     #[cfg(any(ossl110, libressl273))]