diff --git a/DATA/production/configurations/asyncReco/async_pass.sh b/DATA/production/configurations/asyncReco/async_pass.sh
index 5e2729223..291b22706 100755
--- a/DATA/production/configurations/asyncReco/async_pass.sh
+++ b/DATA/production/configurations/asyncReco/async_pass.sh
@@ -280,16 +280,13 @@ fi
 ln -sf $O2DPG_ROOT/DATA/common/setenv.sh
 ln -sf $O2DPG_ROOT/DATA/common/getCommonArgs.sh
 
-# TFDELAY and throttling
-export TFDELAYSECONDS=40
-if [[ -n "$ALIEN_JDL_TFDELAYSECONDS" ]]; then
-  TFDELAYSECONDS="$ALIEN_JDL_TFDELAYSECONDS"
-# ...otherwise, it depends on whether we have throttling
-elif [[ -n "$ALIEN_JDL_USETHROTTLING" ]]; then
-  TFDELAYSECONDS=1
-  if [[ -n "$ALIEN_JDL_NOTFDELAY" ]]; then
-    TFDELAYSECONDS=0
-  fi
+# throttling and TF-delay
+: ${TFDELAYSECONDS:=0}
+if [[ -n "$ALIEN_JDL_NOTFDELAY" ]] && [[ "$ALIEN_JDL_NOTFDELAY" -gt 0 ]] ; then
+  TFDELAYSECONDS=0
+fi
+  
+if [[ -n "$ALIEN_JDL_USETHROTTLING" ]] && [[ -z "$TIMEFRAME_RATE_LIMIT" ]] ; then
   export TIMEFRAME_RATE_LIMIT=1
 fi