diff --git a/components/ratgdo/number/ratgdo_number.cpp b/components/ratgdo/number/ratgdo_number.cpp
index 1838afd..d16f3e4 100644
--- a/components/ratgdo/number/ratgdo_number.cpp
+++ b/components/ratgdo/number/ratgdo_number.cpp
@@ -41,6 +41,8 @@ namespace ratgdo {
         this->number_type_ = number_type_;
         if (this->number_type_ == RATGDO_OPENING_DURATION || this->number_type_ == RATGDO_CLOSING_DURATION) {
             this->traits.set_step(0.1);
+            this->traits.set_min_value(0.0);
+            this->traits.set_max_value(180.0);
         }
     }