diff --git a/v2/devices/FP5.yml b/v2/devices/FP5.yml
index 6d6a19ef..604960f5 100644
--- a/v2/devices/FP5.yml
+++ b/v2/devices/FP5.yml
@@ -144,7 +144,7 @@ operating_systems:
           # Increase space for system_a for UT installation
           - fastboot:resize_logical_partition:
               partition: "system_a"
-              size: 3221225472
+              size: 3421225472
         condition:
           var: "partition"
           value: true