diff --git a/ros2trace/ros2trace/api/__init__.py b/ros2trace/ros2trace/api/__init__.py
index 4f139c1..cb4ecde 100644
--- a/ros2trace/ros2trace/api/__init__.py
+++ b/ros2trace/ros2trace/api/__init__.py
@@ -17,6 +17,7 @@
 from tracetools_trace.tools import args
 from tracetools_trace.tools import lttng
 from tracetools_trace.tools import path
+from tracetools_trace.tools import print_events_list
 
 
 def add_trace_arguments(parser):
@@ -39,13 +40,13 @@ def init(args):
     if ust_enabled:
         print(f'UST tracing enabled ({len(ros_events)} events)')
         if args.list:
-            print(f'\tevents: {ros_events}')
+            print_events_list(ros_events)
     else:
         print('UST tracing disabled')
     if kernel_enabled:
         print(f'kernel tracing enabled ({len(kernel_events)} events)')
         if args.list:
-            print(f'\tevents: {kernel_events}')
+            print_events_list(kernel_events)
     else:
         print('kernel tracing disabled')
 
diff --git a/tracetools_trace/tracetools_trace/tools/__init__.py b/tracetools_trace/tracetools_trace/tools/__init__.py
index be009ca..79f0699 100644
--- a/tracetools_trace/tracetools_trace/tools/__init__.py
+++ b/tracetools_trace/tracetools_trace/tools/__init__.py
@@ -15,6 +15,7 @@
 """Module for tracing."""
 
 import sys
+from typing import List
 
 
 def tracing_supported() -> bool:
@@ -24,3 +25,11 @@ def tracing_supported() -> bool:
     It does not mean a tracer is installed.
     """
     return sys.platform == 'linux'
+
+
+def print_events_list(
+    events: List[str],
+    prefix: str = '\t',
+) -> None:
+    for event in events:
+        print(f'{prefix}{event}')
diff --git a/tracetools_trace/tracetools_trace/trace.py b/tracetools_trace/tracetools_trace/trace.py
index f127038..18e809d 100644
--- a/tracetools_trace/tracetools_trace/trace.py
+++ b/tracetools_trace/tracetools_trace/trace.py
@@ -18,6 +18,7 @@
 from tracetools_trace.tools import args
 from tracetools_trace.tools import lttng
 from tracetools_trace.tools import path
+from tracetools_trace.tools import print_events_list
 
 
 def main():
@@ -33,13 +34,13 @@ def main():
     if ust_enabled:
         print(f'UST tracing enabled ({len(ros_events)} events)')
         if params.list:
-            print(f'\tevents: {ros_events}')
+            print_events_list(ros_events)
     else:
         print('UST tracing disabled')
     if kernel_enabled:
         print(f'kernel tracing enabled ({len(kernel_events)} events)')
         if params.list:
-            print(f'\tevents: {kernel_events}')
+            print_events_list(kernel_events)
     else:
         print('kernel tracing disabled')