diff --git a/bench/boost-bench-mt.cpp b/bench/boost-bench-mt.cpp
index e185f0f1..24967fe6 100644
--- a/bench/boost-bench-mt.cpp
+++ b/bench/boost-bench-mt.cpp
@@ -21,7 +21,6 @@ void init()
     logging::add_file_log
     (
         keywords::file_name = "logs/boost-sample_%N.log",                              /*< file name pattern >*/
-        keywords::rotation_size = 10 * 1024 * 1024,                                   /*< rotate files every 10 MiB... >*/
         keywords::auto_flush = false,
         keywords::format = "[%TimeStamp%]: %Message%"
     );
diff --git a/bench/boost-bench.cpp b/bench/boost-bench.cpp
index 7586d7a0..576a2ee0 100644
--- a/bench/boost-bench.cpp
+++ b/bench/boost-bench.cpp
@@ -17,8 +17,7 @@ void init()
 {
     logging::add_file_log
     (
-        keywords::file_name = "logs/boost-sample_%N.log",                              /*< file name pattern >*/
-        keywords::rotation_size = 10 * 1024 * 1024,                                   /*< rotate files every 10 MiB... >*/
+        keywords::file_name = "logs/boost-sample_%N.log",                              /*< file name pattern >*/ 
         keywords::auto_flush = false,
         keywords::format = "[%TimeStamp%]: %Message%"
     );