diff --git a/t/lib-httpd/apache.conf b/t/lib-httpd/apache.conf
index 332617f10d..51a4fbcf62 100644
--- a/t/lib-httpd/apache.conf
+++ b/t/lib-httpd/apache.conf
@@ -203,7 +203,6 @@ SSLCertificateKeyFile httpd.pem
 SSLRandomSeed startup file:/dev/urandom 512
 SSLRandomSeed connect file:/dev/urandom 512
 SSLSessionCache none
-SSLMutex file:ssl_mutex
 SSLEngine On
 </IfDefine>