diff --git a/simple.yml b/simple.yml
index c507f5d67a7ec24fa16caafbfda70375a7176f37..95a8ba1622fa4585befc45cbf722bcc17e027f89 100644
--- a/simple.yml
+++ b/simple.yml
@@ -121,9 +121,9 @@ patternset:
         _: $jube_pat_wrd
   - name: energy_pattern
     pattern:
-      - name: energy.start
+      - name: energy_start
         _: 'energy_measure_start:$jube_pat_bl$jube_pat_fp'
-      - name: energy.stop
+      - name: energy_stop
         _: 'energy_measure_stop:$jube_pat_bl$jube_pat_fp'
 
 
@@ -158,5 +158,5 @@ result:
       - threadspertask
       - runtime
       - { title: "success", _: success }
-      - energy.start
-      - energy.end
+      - energy_start
+      - energy_end