diff --git a/CMakeLists.txt b/CMakeLists.txt
index 41d6fff..40a2846 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,6 @@
 set(COMPONENT_ADD_INCLUDEDIRS include)
 set(COMPONENT_SRCDIRS ".")
+set(COMPONENT_REQUIRES "driver")
 set(COMPONENT_PRIV_REQUIRES "esp32-smbus")
 register_component()
 
diff --git a/i2c-lcd1602.c b/i2c-lcd1602.c
index 122f8c8..fb87319 100644
--- a/i2c-lcd1602.c
+++ b/i2c-lcd1602.c
@@ -93,6 +93,7 @@
 #include "freertos/task.h"
 #include "esp_system.h"
 #include "esp_log.h"
+#include "rom/ets_sys.h"
 
 #include "i2c-lcd1602.h"