diff --git a/src/mte.ml b/src/mte.ml
index e3d84efd..ac09560c 100644
--- a/src/mte.ml
+++ b/src/mte.ml
@@ -35,7 +35,7 @@ let reporter : Logs.reporter =
   in
   let pp_src ppf v =
     let pp = using Logs.Src.name (styled `Cyan string) in
-    if Logs.Src.equal Logs.default v then pp ppf v
+    if not @@ Logs.Src.equal Logs.default v then pp ppf v
   in
   let pp_detail = option (styled `Green (fmt " (%s)")) in
   let report src lvl ~over k msgf =