diff --git a/simple.yml b/simple.yml
index 95a8ba1622fa4585befc45cbf722bcc17e027f89..e4a295f4a805ea17ff06958780910b3262625404 100644
--- a/simple.yml
+++ b/simple.yml
@@ -122,9 +122,9 @@ patternset:
   - name: energy_pattern
     pattern:
       - name: energy_start
-        _: 'energy_measure_start:$jube_pat_bl$jube_pat_fp'
+        _: 'energy_measure_start:$jube_pat_fp'
       - name: energy_stop
-        _: 'energy_measure_stop:$jube_pat_bl$jube_pat_fp'
+        _: 'energy_measure_stop:$jube_pat_fp'
 
 
 analyser:
diff --git a/src/value.py b/src/value.py
index 5c33c4a89d3547c805d321ab732d80313e706b45..5e12bfd2c7cd8186366238e9431c83cba117bf06 100644
--- a/src/value.py
+++ b/src/value.py
@@ -26,10 +26,10 @@ if __name__ == "__main__":
         time.sleep(random.randint(10, 15))
 
         with open("energy.times", "w") as g:
-            g.write("energy_measure_start: " + str(time.time()) + "\n")
+            g.write("energy_measure_start:" + str(time.time()) + "\n")
 
         if comm.Get_rank() == 0:
             print("Runtime={}{}".format(string, runtime))
 
-        with open("energy.times", "w") as g:
-            g.write("energy_measure_stop: " + str(time.time()) + "\n")
+        with open("energy.times", "a") as g:
+            g.write("energy_measure_stop:" + str(time.time()) + "\n")