6 files changed, 6 insertions, 0 deletions
diff --git a/drivers/led/issi/is31fl3218.h b/drivers/led/issi/is31fl3218.h
index fa760da191..26bb01a014 100644
--- a/drivers/led/issi/is31fl3218.h
+++ b/drivers/led/issi/is31fl3218.h
@@ -18,6 +18,7 @@
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <string.h>
 
 void IS31FL3218_init(void);
 void IS31FL3218_set_color(int index, uint8_t red, uint8_t green, uint8_t blue);
diff --git a/drivers/led/issi/is31fl3731-simple.h b/drivers/led/issi/is31fl3731-simple.h
index 1ddadd5209..7834766b94 100644
--- a/drivers/led/issi/is31fl3731-simple.h
+++ b/drivers/led/issi/is31fl3731-simple.h
@@ -20,6 +20,7 @@
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <string.h>
 #include "progmem.h"
 
 typedef struct is31_led {
diff --git a/drivers/led/issi/is31fl3731.h b/drivers/led/issi/is31fl3731.h
index 6791289c9e..4c79cb8146 100644
--- a/drivers/led/issi/is31fl3731.h
+++ b/drivers/led/issi/is31fl3731.h
@@ -19,6 +19,7 @@
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <string.h>
 #include "progmem.h"
 
 typedef struct is31_led {
diff --git a/drivers/led/issi/is31fl3733-simple.h b/drivers/led/issi/is31fl3733-simple.h
index f0ea3adca0..1571fdd3d5 100644
--- a/drivers/led/issi/is31fl3733-simple.h
+++ b/drivers/led/issi/is31fl3733-simple.h
@@ -22,6 +22,7 @@
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <string.h>
 #include "progmem.h"
 
 typedef struct is31_led {
diff --git a/drivers/led/issi/is31fl3736.h b/drivers/led/issi/is31fl3736.h
index d7307b7414..332b2035f3 100644
--- a/drivers/led/issi/is31fl3736.h
+++ b/drivers/led/issi/is31fl3736.h
@@ -19,6 +19,7 @@
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <string.h>
 #include "progmem.h"
 
 // Simple interface option.
diff --git a/drivers/led/issi/is31fl3737.h b/drivers/led/issi/is31fl3737.h
index 372e9e4e9b..ca9a917ee2 100644
--- a/drivers/led/issi/is31fl3737.h
+++ b/drivers/led/issi/is31fl3737.h
@@ -21,6 +21,7 @@
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <string.h>
 #include "progmem.h"
 
 typedef struct is31_led {