diff --git a/CHANGELOG.md b/CHANGELOG.md
index 666cd7d33..20049b0ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@
 * Correct documentation example for User-Agent header modification (#4997, @jamesyale)
 * Fix random connection stalls (#5040, @EndUser509)
 * Add `n` new flow keybind to mitmweb (#5061, @ianklatzco)
+* Fix compatibility with BoringSSL (@pmoulton)
 
 ## 28 September 2021: mitmproxy 7.0.4
 
diff --git a/mitmproxy/net/tls.py b/mitmproxy/net/tls.py
index 3e9f53bf0..11a1be4d5 100644
--- a/mitmproxy/net/tls.py
+++ b/mitmproxy/net/tls.py
@@ -157,7 +157,7 @@ def create_proxy_server_context(
             ip: bytes = ipaddress.ip_address(hostname).packed
         except ValueError:
             SSL._openssl_assert(  # type: ignore
-                SSL._lib.X509_VERIFY_PARAM_set1_host(param, hostname.encode(), 0) == 1  # type: ignore
+                SSL._lib.X509_VERIFY_PARAM_set1_host(param, hostname.encode(), len(hostname.encode())) == 1  # type: ignore
             )
         else:
             SSL._openssl_assert(  # type: ignore