diff --git a/board/czechlight/clearfog/usb-genimage.cfg b/board/czechlight/clearfog/usb-genimage.cfg
index 23679f4..2260dd8 100644
--- a/board/czechlight/clearfog/usb-genimage.cfg
+++ b/board/czechlight/clearfog/usb-genimage.cfg
@@ -10,7 +10,7 @@
 			"usb-reflash-factory.sh"
 		}
 	}
-	size = 300M
+	size = 350M
 }
 
 image usb-flash.img {