diff --git a/msc/osmo-msc.cfg b/msc/osmo-msc.cfg
index 79ffa04..1adb0e9 100644
--- a/msc/osmo-msc.cfg
+++ b/msc/osmo-msc.cfg
@@ -4,6 +4,7 @@
 !
 log stderr
  logging filter all 1
+ logging print extended-timestamp 1
  logging print file basename last
  logging print category-hex 0
  logging print category 1
diff --git a/msc/osmo-stp.cfg b/msc/osmo-stp.cfg
index 727119d..fc3cf54 100644
--- a/msc/osmo-stp.cfg
+++ b/msc/osmo-stp.cfg
@@ -4,6 +4,7 @@
 !
 log stderr
  logging filter all 1
+ logging print extended-timestamp 1
  logging print file basename last
  logging print category-hex 0
  logging print category 1