diff --git a/scripts/mir/4-node-net.sh b/scripts/mir/4-node-net.sh
index 9c13a941752..c00466185a1 100755
--- a/scripts/mir/4-node-net.sh
+++ b/scripts/mir/4-node-net.sh
@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+n=`date '+%Y-%m-%dT%T'`
+export MIR_INTERCEPTOR_OUTPUT="mir-event-logs/run-$n"
+
 tmux new-session -d -s "mir" \; \
   new-window   -t "mir" \; \
   split-window -t "mir:0" -v \; \
diff --git a/scripts/mir/validator.sh b/scripts/mir/validator.sh
index 6aeb1bca47d..f23c39495d6 100755
--- a/scripts/mir/validator.sh
+++ b/scripts/mir/validator.sh
@@ -26,9 +26,10 @@ cp ./scripts/mir/mir-config/node$INDEX/* $LOTUS_PATH
 mkdir $LOTUS_PATH/mir.db
 
 # Set interceptor output
-n=$(cat mir-event-logs/counter)
-export MIR_INTERCEPTOR_OUTPUT="mir-event-logs/run-${n}"
-echo $((n + 1)) > mir-event-logs/counter
+if [[ -z "${MIR_INTERCEPTOR_OUTPUT}" ]]; then
+  n=`date '+%Y-%m-%dT%T'`
+  MIR_INTERCEPTOR_OUTPUT="mir-event-logs/run/$INDEX/$n"
+fi
 
 # Run validator
 ./eudico mir validator run --nosync --max-block-delay="1s"