diff --git a/tests/server/sockfilt.c b/tests/server/sockfilt.c
index 3244549c8..a174f902e 100644
--- a/tests/server/sockfilt.c
+++ b/tests/server/sockfilt.c
@@ -644,7 +644,7 @@ int main(int argc, char *argv[])
     }
 
     /* start accepting connections */
-    listen(sock, 0);
+    listen(sock, 1);
 
   }