diff --git a/src/mainboard/google/guybrush/mainboard.c b/src/mainboard/google/guybrush/mainboard.c
index bfb0f88dd5..d3a45c1400 100644
--- a/src/mainboard/google/guybrush/mainboard.c
+++ b/src/mainboard/google/guybrush/mainboard.c
@@ -12,6 +12,7 @@
 #include <gpio.h>
 #include <soc/acpi.h>
 #include <variant/ec.h>
+#include <string.h>
 
 #define BACKLIGHT_GPIO			GPIO_129
 #define WWAN_AUX_RST_GPIO		GPIO_18
diff --git a/src/mainboard/google/skyrim/mainboard.c b/src/mainboard/google/skyrim/mainboard.c
index 58e11f5503..3ddcf4227a 100644
--- a/src/mainboard/google/skyrim/mainboard.c
+++ b/src/mainboard/google/skyrim/mainboard.c
@@ -6,6 +6,7 @@
 #include <console/console.h>
 #include <device/device.h>
 #include <soc/acpi.h>
+#include <string.h>
 #include <variant/ec.h>
 
 /*