diff --git a/tests/runtests.pl b/tests/runtests.pl
index 3c568f633..82de7f7a8 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -5457,7 +5457,7 @@ $DICTPORT        = $base++; # DICT port
 $SMBPORT         = $base++; # SMB port
 $SMBSPORT        = $base++; # SMBS port
 $NEGTELNETPORT   = $base++; # TELNET port with negotiation
-$HTTPUNIXPATH    = 'http.sock'; # HTTP server Unix domain socket path
+$HTTPUNIXPATH    = "http$$.sock"; # HTTP server Unix domain socket path
 
 $maxport         = $base-1; # updated base port number