diff --git a/main/presets.h b/main/presets.h
index b1a7b5b..f42fea6 100644
--- a/main/presets.h
+++ b/main/presets.h
@@ -3,8 +3,6 @@
 // local includes
 #include "profilesettings.h"
 
-using namespace std::chrono_literals;
-
 namespace presets {
 constexpr ProfileSettings::Limits defaultLimits {
     .iMotMax = DEFAULT_IMOTMAX,           // profileSetting