diff --git a/tests/data/test866 b/tests/data/test866
index 1f4d2cf8db..8fbf92a608 100644
--- a/tests/data/test866
+++ b/tests/data/test866
@@ -14,7 +14,7 @@ RFC5034
 <servercmd>
 AUTH LOGIN
 REPLY AUTH +
-REPLY dXNlcg== +UGFzc3dvcmQ6
+REPLY dXNlcg== + UGFzc3dvcmQ6
 REPLY c2VjcmV0 +OK Login successful
 </servercmd>
 <data>