diff --git a/fusee/fusee-secondary/src/nxboot.c b/fusee/fusee-secondary/src/nxboot.c
index 1deb04841..bcfd2d041 100644
--- a/fusee/fusee-secondary/src/nxboot.c
+++ b/fusee/fusee-secondary/src/nxboot.c
@@ -215,7 +215,7 @@ void nxboot_main(void) {
 
     /* Boot up Exosphère. */
     MAILBOX_NX_BOOTLOADER_IS_SECMON_AWAKE = 0;
-    if (MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware <= EXOSPHERE_TARGET_FIRMWARE_400) {
+    if (MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware < EXOSPHERE_TARGET_FIRMWARE_400) {
         MAILBOX_NX_BOOTLOADER_SETUP_STATE = NX_BOOTLOADER_STATE_LOADED_PACKAGE2;
     } else {
         MAILBOX_NX_BOOTLOADER_SETUP_STATE = NX_BOOTLOADER_STATE_LOADED_PACKAGE2_4X;
@@ -224,7 +224,7 @@ void nxboot_main(void) {
     while (MAILBOX_NX_BOOTLOADER_IS_SECMON_AWAKE == 0) {
         /* Wait for Exosphere to wake up. */
     }
-    if (MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware <= EXOSPHERE_TARGET_FIRMWARE_400) {
+    if (MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware < EXOSPHERE_TARGET_FIRMWARE_400) {
         MAILBOX_NX_BOOTLOADER_SETUP_STATE = NX_BOOTLOADER_STATE_FINISHED;
     } else {
         MAILBOX_NX_BOOTLOADER_SETUP_STATE = NX_BOOTLOADER_STATE_FINISHED_4X;