diff --git a/esphome/components/uponor_smatrix/uponor_smatrix.cpp b/esphome/components/uponor_smatrix/uponor_smatrix.cpp
index 10cd787c7f..df81691fb1 100644
--- a/esphome/components/uponor_smatrix/uponor_smatrix.cpp
+++ b/esphome/components/uponor_smatrix/uponor_smatrix.cpp
@@ -61,9 +61,11 @@ void UponorSmatrixComponent::loop() {
 
   // Send packets during bus silence
   if ((now - this->last_rx_ > 300) && (now - this->last_poll_start_ < 9500) && (now - this->last_tx_ > 200)) {
+#ifdef USE_TIME
     // Only build time packet when bus is silent and queue is empty to make sure we can send it right away
     if (this->send_time_requested_ && this->tx_queue_.empty() && this->do_send_time_())
       this->send_time_requested_ = false;
+#endif
     // Send the next packet in the queue
     if (!this->tx_queue_.empty()) {
       auto packet = std::move(this->tx_queue_.front());
diff --git a/esphome/components/uponor_smatrix/uponor_smatrix.h b/esphome/components/uponor_smatrix/uponor_smatrix.h
index b6675199b5..b7667b5b87 100644
--- a/esphome/components/uponor_smatrix/uponor_smatrix.h
+++ b/esphome/components/uponor_smatrix/uponor_smatrix.h
@@ -4,6 +4,8 @@
 #include "esphome/core/component.h"
 #include "esphome/core/helpers.h"
 
+#include "esphome/core/defines.h"
+
 #ifdef USE_TIME
 #include "esphome/components/time/real_time_clock.h"
 #include "esphome/core/time.h"