diff --git a/esphome/components/shelly_dimmer/stm32flash.cpp b/esphome/components/shelly_dimmer/stm32flash.cpp
index 7e76aac60c7..0dab7b75f9c 100644
--- a/esphome/components/shelly_dimmer/stm32flash.cpp
+++ b/esphome/components/shelly_dimmer/stm32flash.cpp
@@ -116,7 +116,7 @@ namespace esphome::shelly_dimmer {
 
 namespace {
 
-static uint32_t read_page_size(const uint32_t *psize) {
+uint32_t read_page_size(const uint32_t *psize) {
   uint32_t size;
   progmem_memcpy(&size, psize, sizeof(size));
   return size;