diff --git a/conf/event-generator/expdef.yml b/conf/event-generator/expdef.yml
index 5a3c11cccf877eddb7c3051d2a776e9db5c64624..5f24adaa9755771a9d4b6225afd409cbf1b7a5ce 100644
--- a/conf/event-generator/expdef.yml
+++ b/conf/event-generator/expdef.yml
@@ -3,7 +3,7 @@ experiment:
 #  MEMBERS: "m[1-2]"
   MEMBERS: "m1"
   CHUNKSIZEUNIT: hour
-  CHUNKSIZE: 6
+  CHUNKSIZE: 4
   NUMCHUNKS: 2
   CHUNKINI: 0
   CALENDAR: standard
\ No newline at end of file