diff --git a/test/misc.c b/test/misc.c
index da6fb89eb6..957b8c5a53 100644
--- a/test/misc.c
+++ b/test/misc.c
@@ -169,7 +169,7 @@ dix_request_fixed_size_overflow(ClientRec *client)
     xReq req = { 0 };
 
     client->req_len = req.length = 1;
-    REQUEST_FIXED_SIZE(req, SIZE_MAX);
+    REQUEST_FIXED_SIZE(req, 4096);
     return Success;
 }