diff --git a/build b/build
index a523b17..a523461 100755
--- a/build
+++ b/build
@@ -114,10 +114,12 @@ BR2_ROOTFS_POST_SCRIPT_ARGS=\"$post_script_args\"
     # http://lists.busybox.net/pipermail/buildroot/2017-August/201053.html
     sed -Ei 's/^BR2_PACKAGE_LINUX_TOOLS_GPIO/BR2_PACKAGE_LINUX_TOOLS_GPIO=n/' "${config_file}"
   fi
-  # TODO why is this needed. Otherwise kernel .config does not change, even though Buildroot
-  # .config did due to -K. even if we are running linux-kernel-reconfigure!
-  rm -f "${out_dir}/build/linux-custom/.config"
   if [ -n "$linux_kernel_custom_config_file" ]; then
+    # TODO why is this needed. Otherwise kernel .config does not change, even though Buildroot
+    # .config did due to -K. even if we are running linux-kernel-reconfigure!
+    # But doing this forces launches the kernel's reconfigure. Annoying.
+    # https://stackoverflow.com/questions/49260466/why-is-it-that-if-i-change-br2-linux-kernel-custom-config-file-and-run-linux-rec
+    rm -f "${out_dir}/build/linux-custom/.config"
     printf "BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE=\"../${linux_kernel_custom_config_file}\"\n" >> "${config_file}"
   fi
   make O="$out_dir" olddefconfig