diff --git a/usr/local/www/system_firmware.php b/usr/local/www/system_firmware.php
index 4beb120a4c..3c0a3d72f9 100755
--- a/usr/local/www/system_firmware.php
+++ b/usr/local/www/system_firmware.php
@@ -229,7 +229,11 @@ if(stristr($_FILES['ulfile']['name'],"nanobsd"))
 					<strong>Firmware image file: </strong>&nbsp;
 					<input name="ulfile" type="file" class="formfld">
 					<br><br>
-					<b>NOTE: You must upload a .tgz image, not an uncompressed image!</b> 
+					<?php if ($g['platform'] == "nanobsd"): ?>
+					<b>NOTE: You must upload a .img.gz image, not an uncompressed image!</b>
+					<?php else: ?>
+					<b>NOTE: You must upload a .tgz image, not an uncompressed image!</b>
+					<?php endif; ?>
                     <br><br>
 					  <?php
 				  		if(!file_exists("/boot/kernel/pfsense_kernel.txt")) {