diff --git a/build_helper/build_helper_configs.py b/build_helper/build_helper_configs.py
index 1eb8b1b..5d73aec 100755
--- a/build_helper/build_helper_configs.py
+++ b/build_helper/build_helper_configs.py
@@ -89,7 +89,7 @@
 
     # Keys will append extra commands when matching target_platform
     "post_build": {"arm/corstone1000": ("dd conv=notrunc bs=1 if=%(ci_build_root_dir)s/spe/bin/bl1_1.bin of=%(ci_build_root_dir)s/spe/bin/bl1.bin seek=0;"
-                                        "dd conv=notrunc bs=1 if=%(ci_build_root_dir)s/spe/bin/bl1_provisioning_bundle.bin of=%(ci_build_root_dir)s/spe/bin/bl1.bin seek=49152;"
+                                        "dd conv=notrunc bs=1 if=%(ci_build_root_dir)s/spe/bin/bl1_provisioning_bundle.bin of=%(ci_build_root_dir)s/spe/bin/bl1.bin seek=51200;"
                                         "%(codebase_root_dir)s/platform/ext/target/arm/corstone1000/create-flash-image.sh %(ci_build_root_dir)s/spe/bin/ cs1000.bin;"),
                     "arm/musca_b1": ("if [ -d \"%(ci_build_root_dir)s/nspe\" ]; then "
                                      "srec_cat "