diff --git a/system/trace/trace_dump.c b/system/trace/trace_dump.c
index 9ffd788cf..a75af1965 100644
--- a/system/trace/trace_dump.c
+++ b/system/trace/trace_dump.c
@@ -653,6 +653,8 @@ static int trace_dump_one(FAR FILE *out,
         break;
     }
 
+  fflush(out);
+
   /* Return the length of the processed note */
 
   return note->nc_length;