diff --git a/extras/tools/bin2ota.py b/extras/tools/bin2ota.py
index 6a51268a..b546c09f 100755
--- a/extras/tools/bin2ota.py
+++ b/extras/tools/bin2ota.py
@@ -39,6 +39,8 @@
     magic_number = 0x45535033.to_bytes(4,byteorder='little')
 elif board == "UNOR4WIFI":
     magic_number = 0x23411002.to_bytes(4,byteorder='little')
+elif board == "PORTENTA_C33":
+    magic_number = 0x23410068.to_bytes(4,byteorder='little')
 else:
     print ("Error,", board, "is not a supported board type")
     sys.exit()