diff --git a/wic/sdimage-2part.wks b/wic/sdimage-2part.wks
index 77d6f7b5..3eab9407 100644
--- a/wic/sdimage-2part.wks
+++ b/wic/sdimage-2part.wks
@@ -2,5 +2,5 @@
 # long-description: Creates a partitioned SD card image for TI platforms.
 # Boot files are located in the first vfat partition with extra reserved space.
 
-part /boot --source bootimg-partition --ondisk mmcblk0 --fstype=vfat --label boot --active --align 1024 --extra-space 100M --use-uuid
+part /boot --source bootimg-partition --ondisk mmcblk0 --fstype=vfat --label boot --active --align 1024 --fixed-size 128 --use-uuid
 part / --source rootfs --ondisk mmcblk0 --fstype=ext4 --label root --align 1024 --use-uuid