diff --git a/plans/testing_3.5.2.fmf b/plans/testing_3.5.2.fmf
index 26080bf81f9..8854d09d93f 100644
--- a/plans/testing_3.5.2.fmf
+++ b/plans/testing_3.5.2.fmf
@@ -28,7 +28,7 @@ discover:
     - name: unit
       test: >
         RUST_LOG=stratisd=debug
-        python3 test_harness.py stratisd_cert
+        python3 test_harness.py --log-level=debug stratisd_cert
         --verify-devices
 execute:
   how: tmt
diff --git a/plans/testing_HEAD.fmf b/plans/testing_HEAD.fmf
index 63ccc1b3834..5ac5a35227e 100644
--- a/plans/testing_HEAD.fmf
+++ b/plans/testing_HEAD.fmf
@@ -28,7 +28,7 @@ discover:
     - name: unit
       test: >
         RUST_LOG=stratisd=debug
-        python3 test_harness.py stratisd_cert
+        python3 test_harness.py --log-level=debug stratisd_cert
         --verify-devices --monitor-dbus --highest-revision-number=6
 execute:
   how: tmt