diff --git a/include/pm3_cmd.h b/include/pm3_cmd.h
index ac5d7ce00..b85d996d6 100644
--- a/include/pm3_cmd.h
+++ b/include/pm3_cmd.h
@@ -122,6 +122,7 @@ typedef struct {
     bool verbose;
 } PACKED sample_config;
 
+// Tracelog Header struct
 typedef struct {
     uint32_t timestamp;
     uint16_t duration;