diff --git a/src/mainboard/emulation/qemu-i440fx/northbridge.c b/src/mainboard/emulation/qemu-i440fx/northbridge.c
index e1765faba1..06aa83af50 100644
--- a/src/mainboard/emulation/qemu-i440fx/northbridge.c
+++ b/src/mainboard/emulation/qemu-i440fx/northbridge.c
@@ -10,7 +10,6 @@
 #include <arch/ioapic.h>
 #include <device/device.h>
 #include <stdlib.h>
-#include <string.h>
 #include <smbios.h>
 #include <types.h>
 #include "memory.h"
diff --git a/src/mainboard/google/brya/variants/brya0/gpio.c b/src/mainboard/google/brya/variants/brya0/gpio.c
index c3cfc0c3d4..95151bce5e 100644
--- a/src/mainboard/google/brya/variants/brya0/gpio.c
+++ b/src/mainboard/google/brya/variants/brya0/gpio.c
@@ -4,7 +4,6 @@
 #include <boardid.h>
 #include <console/console.h>
 #include <soc/gpio.h>
-#include <string.h>
 
 static const struct pad_config board_id0_1_overrides[] = {
 	/* B2  : VRALERT# ==> NC */
diff --git a/src/mainboard/google/brya/variants/brya4es/gpio.c b/src/mainboard/google/brya/variants/brya4es/gpio.c
index c3cfc0c3d4..95151bce5e 100644
--- a/src/mainboard/google/brya/variants/brya4es/gpio.c
+++ b/src/mainboard/google/brya/variants/brya4es/gpio.c
@@ -4,7 +4,6 @@
 #include <boardid.h>
 #include <console/console.h>
 #include <soc/gpio.h>
-#include <string.h>
 
 static const struct pad_config board_id0_1_overrides[] = {
 	/* B2  : VRALERT# ==> NC */
diff --git a/src/mainboard/google/slippy/variants/falco/romstage.c b/src/mainboard/google/slippy/variants/falco/romstage.c
index 9ab76292fb..b391d81b31 100644
--- a/src/mainboard/google/slippy/variants/falco/romstage.c
+++ b/src/mainboard/google/slippy/variants/falco/romstage.c
@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#include <string.h>
 #include <northbridge/intel/haswell/raminit.h>
 #include <southbridge/intel/lynxpoint/pch.h>
 #include <southbridge/intel/lynxpoint/lp_gpio.h>
diff --git a/src/mainboard/google/slippy/variants/leon/romstage.c b/src/mainboard/google/slippy/variants/leon/romstage.c
index 6911c257b0..50a1b7305c 100644
--- a/src/mainboard/google/slippy/variants/leon/romstage.c
+++ b/src/mainboard/google/slippy/variants/leon/romstage.c
@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#include <string.h>
 #include <northbridge/intel/haswell/raminit.h>
 #include <southbridge/intel/lynxpoint/pch.h>
 #include <southbridge/intel/lynxpoint/lp_gpio.h>
diff --git a/src/mainboard/google/slippy/variants/peppy/romstage.c b/src/mainboard/google/slippy/variants/peppy/romstage.c
index efbbc7f8c7..32fdd97e94 100644
--- a/src/mainboard/google/slippy/variants/peppy/romstage.c
+++ b/src/mainboard/google/slippy/variants/peppy/romstage.c
@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <stdint.h>
-#include <string.h>
 #include <ec/google/chromeec/ec.h>
 #include <northbridge/intel/haswell/raminit.h>
 #include <southbridge/intel/lynxpoint/pch.h>
diff --git a/src/mainboard/google/slippy/variants/wolf/romstage.c b/src/mainboard/google/slippy/variants/wolf/romstage.c
index 4c67afefcf..7c1bff007b 100644
--- a/src/mainboard/google/slippy/variants/wolf/romstage.c
+++ b/src/mainboard/google/slippy/variants/wolf/romstage.c
@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#include <string.h>
 #include <northbridge/intel/haswell/raminit.h>
 #include <southbridge/intel/lynxpoint/pch.h>
 #include <southbridge/intel/lynxpoint/lp_gpio.h>
diff --git a/src/mainboard/google/zork/variants/dalboz/variant.c b/src/mainboard/google/zork/variants/dalboz/variant.c
index b4e5bcc671..4b23ed5cab 100644
--- a/src/mainboard/google/zork/variants/dalboz/variant.c
+++ b/src/mainboard/google/zork/variants/dalboz/variant.c
@@ -5,7 +5,6 @@
 #include <device/device.h>
 #include <ec/google/chromeec/ec.h>
 #include <ec/google/chromeec/i2c_tunnel/chip.h>
-#include <string.h>
 
 #define DALBOZ_DB_HDMI 0x1
 
diff --git a/src/mainboard/intel/shadowmountain/romstage.c b/src/mainboard/intel/shadowmountain/romstage.c
index 3aacf38a03..dffdcdc4a0 100644
--- a/src/mainboard/intel/shadowmountain/romstage.c
+++ b/src/mainboard/intel/shadowmountain/romstage.c
@@ -4,7 +4,6 @@
 #include <fsp/api.h>
 #include <soc/romstage.h>
 #include <spd_bin.h>
-#include <string.h>
 #include <soc/meminit.h>
 #include <baseboard/variants.h>
 #include <cbfs.h>
diff --git a/src/mainboard/ocp/deltalake/uartio_vpd.c b/src/mainboard/ocp/deltalake/uartio_vpd.c
index d2e052f93a..83034727cd 100644
--- a/src/mainboard/ocp/deltalake/uartio_vpd.c
+++ b/src/mainboard/ocp/deltalake/uartio_vpd.c
@@ -3,7 +3,6 @@
 #include <console/console.h>
 #include <drivers/vpd/vpd.h>
 #include <console/uart.h>
-#include <string.h>
 
 #include "vpd.h"
 
diff --git a/src/mainboard/samsung/lumpy/mainboard.c b/src/mainboard/samsung/lumpy/mainboard.c
index 9bf3b96e65..0605b5ffa4 100644
--- a/src/mainboard/samsung/lumpy/mainboard.c
+++ b/src/mainboard/samsung/lumpy/mainboard.c
@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <types.h>
-#include <string.h>
 #include <device/device.h>
 #include <drivers/intel/gma/int15.h>
 #include <acpi/acpi.h>