diff --git a/rebar.config.sample b/rebar.config.sample
index b83ea873..9be13733 100644
--- a/rebar.config.sample
+++ b/rebar.config.sample
@@ -161,5 +161,5 @@
 %% functions from undefined external function calls as those are in a
 %% generated module
 {xref_queries,
-  [{"(XC - UC) || (XU - X - B"
-    " - (\"ejabberd_logger\":\".*_msg\"/\"4\"))",[]}]}.
+ [{"(XC - UC) || (XU - X - B"
+   " - (\"ejabberd_logger\":\".*_msg\"/\"4\"))",[]}]}.