diff --git a/src/mainboard/google/dedede/romstage.c b/src/mainboard/google/dedede/romstage.c
index f6a94ec137..34810b46d4 100644
--- a/src/mainboard/google/dedede/romstage.c
+++ b/src/mainboard/google/dedede/romstage.c
@@ -6,7 +6,6 @@
 #include <memory_info.h>
 #include <soc/meminit.h>
 #include <soc/romstage.h>
-#include <string.h>
 #include <variant/gpio.h>
 
 void mainboard_memory_init_params(FSPM_UPD *memupd)
diff --git a/src/mainboard/google/hatch/romstage_spd_cbfs.c b/src/mainboard/google/hatch/romstage_spd_cbfs.c
index 8a12d706f8..eb5153c133 100644
--- a/src/mainboard/google/hatch/romstage_spd_cbfs.c
+++ b/src/mainboard/google/hatch/romstage_spd_cbfs.c
@@ -6,7 +6,6 @@
 #include <memory_info.h>
 #include <soc/cnl_memcfg_init.h>
 #include <soc/romstage.h>
-#include <string.h>
 #include <variant/gpio.h>
 
 /*
diff --git a/src/mainboard/google/kukui/boardid.c b/src/mainboard/google/kukui/boardid.c
index 04ae7db8f9..117475680f 100644
--- a/src/mainboard/google/kukui/boardid.c
+++ b/src/mainboard/google/kukui/boardid.c
@@ -16,7 +16,6 @@
 #include <soc/auxadc_common.h>
 #include <soc/i2c.h>
 #include <soc/pmic_wrap_common.h>
-#include <string.h>
 
 /* For CBI un-provisioned/corrupted Flapjack board. */
 #define FLAPJACK_UNDEF_SKU_ID 0
diff --git a/src/mainboard/google/zork/variants/dirinboz/variant.c b/src/mainboard/google/zork/variants/dirinboz/variant.c
index 4dd371a871..ebe2292be1 100644
--- a/src/mainboard/google/zork/variants/dirinboz/variant.c
+++ b/src/mainboard/google/zork/variants/dirinboz/variant.c
@@ -6,7 +6,6 @@
 #include <soc/pci_devs.h>
 #include <ec/google/chromeec/ec.h>
 #include <ec/google/chromeec/i2c_tunnel/chip.h>
-#include <string.h>
 
 /* FIXME: Comments seem to suggest these are not entirely correct. */
 static const fsp_ddi_descriptor non_hdmi_ddi_descriptors[] = {
diff --git a/src/mainboard/google/zork/variants/gumboz/variant.c b/src/mainboard/google/zork/variants/gumboz/variant.c
index 4dd371a871..ebe2292be1 100644
--- a/src/mainboard/google/zork/variants/gumboz/variant.c
+++ b/src/mainboard/google/zork/variants/gumboz/variant.c
@@ -6,7 +6,6 @@
 #include <soc/pci_devs.h>
 #include <ec/google/chromeec/ec.h>
 #include <ec/google/chromeec/i2c_tunnel/chip.h>
-#include <string.h>
 
 /* FIXME: Comments seem to suggest these are not entirely correct. */
 static const fsp_ddi_descriptor non_hdmi_ddi_descriptors[] = {