+diff --git a/drivers/pinctrl/pinctrl-uclass.c b/drivers/pinctrl/pinctrl-uclass.c
+index 3425ed11..8c2e1d5c 100644
+--- a/drivers/pinctrl/pinctrl-uclass.c
++++ b/drivers/pinctrl/pinctrl-uclass.c
+@@ -368,7 +368,7 @@ int pinctrl_get_pin_name(struct udevice *dev, int selector, char *buf,
+ if (!ops->get_pin_name)
+ return -ENOSYS;
+
+- snprintf(buf, size, ops->get_pin_name(dev, selector));
++ snprintf(buf, size, "%s", ops->get_pin_name(dev, selector));
+
+ return 0;
+ }
+diff --git a/lib/efi_loader/efi_variable.c b/lib/efi_loader/efi_variable.c
+index c316bdfe..5fe8129c 100644
+--- a/lib/efi_loader/efi_variable.c
++++ b/lib/efi_loader/efi_variable.c
+@@ -522,7 +522,7 @@ efi_status_t EFIAPI efi_set_variable(u16 *variable_name,
+
+ if (old_size)
+ /* APPEND_WRITE */
+- s += sprintf(s, old_val);
++ s += sprintf(s, "%s", old_val);
+ else
+ s += sprintf(s, "(blob)");
+