diff --git a/src/add-ons/kernel/drivers/power/acpi_button/acpi_button.c b/src/add-ons/kernel/drivers/power/acpi_button/acpi_button.c
index f93381bf7e..b0221bc829 100644
--- a/src/add-ons/kernel/drivers/power/acpi_button/acpi_button.c
+++ b/src/add-ons/kernel/drivers/power/acpi_button/acpi_button.c
@@ -5,6 +5,7 @@
 #include <KernelExport.h>
 #include <Drivers.h>
 #include <Errors.h>
+#include <string.h>
 
 #include <ACPI.h>