diff --git a/build_helper/build_helper_configs.py b/build_helper/build_helper_configs.py
index 17c7eb6..42cb026 100755
--- a/build_helper/build_helper_configs.py
+++ b/build_helper/build_helper_configs.py
@@ -141,7 +141,7 @@
                                           "bin/tfm_s_signed.bin "
                                           "image_signing/scripts/tfm_ns_signed.bin ;"
                                           "popd"),
-                   "nxp/lpcxpresso55s69": "echo 'LPCXpresso55S69 board post process\n'; "
+                   "nxp/lpcxpresso55s69": ("echo 'LPCXpresso55S69 board post process\n'; "
                                            "pyocd erase --mass -t lpc55s69 --no-wait; "
                                            "if [ -f \"%(ci_build_root_dir)s/spe/bin/bl2.hex\" ]; then "
                                            "pyocd flash %(ci_build_root_dir)s/spe/bin/bl2.hex -t lpc55s69 --no-wait; "