diff --git a/tests/libfuzzer/network/ssl/qsslcertificate/qsslcertificate/pem/main.cpp b/tests/libfuzzer/network/ssl/qsslcertificate/qsslcertificate/pem/main.cpp
index fd491e2b93b..d41ba365458 100644
--- a/tests/libfuzzer/network/ssl/qsslcertificate/qsslcertificate/pem/main.cpp
+++ b/tests/libfuzzer/network/ssl/qsslcertificate/qsslcertificate/pem/main.cpp
@@ -29,6 +29,10 @@
 #include <QSslCertificate>
 
 extern "C" int LLVMFuzzerTestOneInput(const char *Data, size_t Size) {
+    // to reduce noise and increase speed
+    static char quiet[] = "QT_LOGGING_RULES=qt.network.ssl=false";
+    static int pe = putenv(quiet);
+    Q_UNUSED(pe);
     QSslCertificate ssl(QByteArray::fromRawData(Data, Size), QSsl::Pem);
     return 0;
 }