diff --git a/Understanding-and-debugging-Nimbus-EVM-JSON-tests.md b/Understanding-and-debugging-Nimbus-EVM-JSON-tests.md
index 30eca2a..fc7949d 100644
--- a/Understanding-and-debugging-Nimbus-EVM-JSON-tests.md
+++ b/Understanding-and-debugging-Nimbus-EVM-JSON-tests.md
@@ -18,7 +18,7 @@ nim c -r -o:build/test_generalstate_json tests/test_generalstate_json.nim
 
 Build and run an individual test (with tracing enabled):
 ```
-nim c -r -d:chronicles_log_level=TRACE -d:chronicles_line_numbers -o:build/test_generalstate_json tests/test_generalstate_json.nim tests/fixtures/GeneralStateTests/stAttackTest/ContractCreationSpam.json
+nim c -r -d:chronicles_log_level=TRACE -o:build/test_generalstate_json tests/test_generalstate_json.nim tests/fixtures/GeneralStateTests/stAttackTest/ContractCreationSpam.json
 ```
 (this particular test needs to be commented out of "tests/test_generalstate_failing.nim" before running it)