diff --git a/tests/auto/network/access/http2/tst_http2.cpp b/tests/auto/network/access/http2/tst_http2.cpp
index 17cb62ac246..9e1feede1b7 100644
--- a/tests/auto/network/access/http2/tst_http2.cpp
+++ b/tests/auto/network/access/http2/tst_http2.cpp
@@ -1552,6 +1552,19 @@ void tst_Http2::abortOnEncrypted()
 #if !QT_CONFIG(ssl)
     QSKIP("TLS support is needed for this test");
 #else
+
+#if QT_CONFIG(securetransport)
+    // Normally on macOS we use plain text only for SecureTransport
+    // does not support ALPN on the server side. With 'direct encrytped'
+    // we have to use TLS sockets (== private key) and thus suppress a
+    // keychain UI asking for permission to use a private key.
+    // Our CI has this, but somebody testing locally - will have a problem.
+    qputenv("QT_SSL_USE_TEMPORARY_KEYCHAIN", "1");
+    auto envRollback = qScopeGuard([](){
+        qunsetenv("QT_SSL_USE_TEMPORARY_KEYCHAIN");
+    });
+#endif
+
     clearHTTP2State();
     serverPort = 0;