diff --git a/device/mellanox/x86_64-nvidia_sn5600-r0/Mellanox-SN5600-V256/sai_5600_256x200g.xml b/device/mellanox/x86_64-nvidia_sn5600-r0/Mellanox-SN5600-V256/sai_5600_256x200g.xml
index a733d9ec2c81..a097139c1d9e 100644
--- a/device/mellanox/x86_64-nvidia_sn5600-r0/Mellanox-SN5600-V256/sai_5600_256x200g.xml
+++ b/device/mellanox/x86_64-nvidia_sn5600-r0/Mellanox-SN5600-V256/sai_5600_256x200g.xml
@@ -22,7 +22,7 @@
         <device-mac-address>00:02:03:04:05:00</device-mac-address>
 
         <!-- ISSU enabled -->
-        <issu-enabled>1</issu-enabled>
+        <issu-enabled>0</issu-enabled>
 
         <!-- Number of ports in the following port list -->
         <number-of-physical-ports>64</number-of-physical-ports>