--- a/ucx/ucx/logging.h	Sat Dec 05 10:34:10 2020 +0100
+++ b/ucx/ucx/logging.h	Sat Dec 05 11:54:58 2020 +0100
@@ -160,7 +160,10 @@
  * format is:
  * 
  * <code>[LEVEL] [TIMESTAMP] [SOURCEFILE]:[LINENO] message</code>
- * 
+ *
+ * The source file name is reduced to the actual file name. This is necessary to
+ * get consistent behavior over different definitions of the __FILE__ macro.
+ *
  * <b>Attention:</b> the message (including automatically generated information)
  * is limited to 4096 characters. The level description is limited to
  * 256 characters and the timestamp string is limited to 128 characters.