diff --git a/openssl/src/ssl/mod.rs b/openssl/src/ssl/mod.rs
index 06c95e62a58357619ef553ecab08290a1d6f14fe..0e640bb0ef869ccf3b8398c742556dff8dc663ee 100644
--- a/openssl/src/ssl/mod.rs
+++ b/openssl/src/ssl/mod.rs
@@ -832,7 +832,7 @@ impl SslContextBuilder {
     {
         unsafe {
             self.set_ex_data(SslContext::cached_ex_index::<F>(), callback);
-            ffi::SSL_CTX_set_tmp_ecdh_callback(self.as_ptr(), raw_tmp_ecdh::<F>);
+            ffi::SSL_CTX_set_tmp_ecdh_callback__fixed_rust(self.as_ptr(), Some(raw_tmp_ecdh::<F>));
         }
     }