diff --git a/ttcn3-bts-test/osmo-bsc.cfg b/ttcn3-bts-test/osmo-bsc.cfg
index ce497325..e4e2493d 100644
--- a/ttcn3-bts-test/osmo-bsc.cfg
+++ b/ttcn3-bts-test/osmo-bsc.cfg
@@ -3,9 +3,9 @@
 !!
 password foo
 !
-log stderr
+log file /data/osmo-bsc.log
   logging filter all 1
-  logging color 1
+  logging color 0
   logging print category 1
   logging timestamp 1
   logging print file 1
diff --git a/ttcn3-bts-test/osmo-bts.cfg b/ttcn3-bts-test/osmo-bts.cfg
index 06633f0a..036f7195 100644
--- a/ttcn3-bts-test/osmo-bts.cfg
+++ b/ttcn3-bts-test/osmo-bts.cfg
@@ -2,9 +2,9 @@
 ! OsmoBTS (0.4.0.446-e0fb) configuration saved from vty
 !!
 !
-log stderr
+log file /data/osmo-bts.log
   logging filter all 1
-  logging color 1
+  logging color 0
   logging print category 1
   logging timestamp 1
   logging level rsl info