diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 9917701d..c24cdf8d 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -106,7 +106,7 @@ jobs:
                   which -a kyua
             - name: Configure
               run: |
-                  CFG_ARGS=""
+                  CFG_ARGS="--enable-developer"
                   for i in ${{ join(matrix.sanitize, ' ') }}; do
                       CFG_ARGS="${CFG_ARGS} --enable-${i}"
                   done
@@ -248,7 +248,7 @@ jobs:
             - name: Configure
               shell: freebsd {0}
               run: |
-                  CFG_ARGS=""
+                  CFG_ARGS="--enable-developer"
                   for i in ${{ join(matrix.sanitize, ' ') }}; do
                       CFG_ARGS="${CFG_ARGS} --enable-${i}"
                   done
diff --git a/admin/ci-build/02_distcheck.sh b/admin/ci-build/02_distcheck.sh
index aa3c7b41..adc249a3 100755
--- a/admin/ci-build/02_distcheck.sh
+++ b/admin/ci-build/02_distcheck.sh
@@ -1,11 +1,13 @@
 #!/bin/sh
 #
+# Copyright (c) 2026 Enji Cooper.
+#
+# SPDX-License-Identifier: BSD-2-Clause
+
 # Step 2: run `make distcheck`.
 #
 # `make distcheck` builds the tests, runs them, and subsequently performs a
 # style check on the code.
-#
-# SPDX-License-Identifier: BSD-2-Clause
 
 set -eux