diff --git a/src/samplefunctional.hh b/src/samplefunctional.hh
index a2f413d94a5934a83ba1003fe6bd480b9613ac0c..08790096ff22392de29a604a735b3d5faa1e9e94 100644
--- a/src/samplefunctional.hh
+++ b/src/samplefunctional.hh
@@ -152,10 +152,10 @@ void minimise(Functional const J, typename Functional::SmallVector &x,
     */
     SmallVector tmp;
 
-    J.A.mv(descDir, tmp);                // Av
+    J.A.mv(descDir, tmp);                //  Av
     double const JRestA = tmp * descDir; // <Av,v>
 
-    tmp = J.b;
+    tmp = J.b;                           //  b
     J.A.mmv(x, tmp);                     //  b-Au
     double const JRestb = tmp * descDir; // <b-Au,v>