diff --git a/tracetools_trace/tracetools_trace/tools/__init__.py b/tracetools_trace/tracetools_trace/tools/__init__.py
index e9bbd18..be009ca 100644
--- a/tracetools_trace/tracetools_trace/tools/__init__.py
+++ b/tracetools_trace/tracetools_trace/tools/__init__.py
@@ -20,6 +20,7 @@ import sys
 def tracing_supported() -> bool:
     """
     Check if tracing is supported on this platform.
+
     It does not mean a tracer is installed.
     """
     return sys.platform == 'linux'