diff --git a/core/embed/sys/tamper/inc/sys/tamper.h b/core/embed/sys/tamper/inc/sys/tamper.h
index 118aed2847d..ac40e046f22 100644
--- a/core/embed/sys/tamper/inc/sys/tamper.h
+++ b/core/embed/sys/tamper/inc/sys/tamper.h
@@ -27,7 +27,7 @@
 // as well as external tamper input if it's available on the device
 
 // Initializes the tamper detection
-void tamper_init(void);
+bool tamper_init(void);
 
 // Get status of external tamper inputs
 uint8_t tamper_external_read(void);
diff --git a/core/embed/sys/tamper/stm32u5/tamper.c b/core/embed/sys/tamper/stm32u5/tamper.c
index bca2954dd8f..43dd6abac9e 100644
--- a/core/embed/sys/tamper/stm32u5/tamper.c
+++ b/core/embed/sys/tamper/stm32u5/tamper.c
@@ -96,13 +96,17 @@ HAL_StatusTypeDef clk_init(uint32_t source) {
   return HAL_OK;
 }
 
-void tamper_init(void) {
+bool tamper_init(void) {
 #ifdef USE_LSE
-  clk_init(RCC_RTCCLKSOURCE_LSE);
+  HAL_StatusTypeDef res = clk_init(RCC_RTCCLKSOURCE_LSE);
 #else
-  clk_init(RCC_RTCCLKSOURCE_LSI);
+  HAL_StatusTypeDef res = clk_init(RCC_RTCCLKSOURCE_LSI);
 #endif
 
+  if (res != HAL_OK) {
+    return false;
+  }
+
   // Enable RTC peripheral (tampers are part of it)
   __HAL_RCC_RTC_ENABLE();
   __HAL_RCC_RTCAPB_CLK_ENABLE();
@@ -163,6 +167,8 @@ void tamper_init(void) {
   // Enable TAMP interrupt at NVIC controller
   NVIC_SetPriority(TAMP_IRQn, IRQ_PRI_HIGHEST);
   NVIC_EnableIRQ(TAMP_IRQn);
+
+  return true;
 }
 
 uint8_t tamper_external_read(void) {