diff --git a/crates/storage-cassandra/tests/direct_integration.rs b/crates/storage-cassandra/tests/direct_integration.rs
index 863bbda69..4403658ab 100644
--- a/crates/storage-cassandra/tests/direct_integration.rs
+++ b/crates/storage-cassandra/tests/direct_integration.rs
@@ -4,8 +4,9 @@
 //! Direct storage-trait integration tests, ported from the original
 //! extenddb-cassandra-plugin repository (its tests/rust suite). They exercise
 //! the Cassandra engine's trait implementations directly against a live node
-//! at 127.0.0.1:9042 — no HTTP server in between — and skip themselves when
-//! no Cassandra is reachable (see helpers::skip_without_cassandra).
+//! at the contact point in `EXTENDDB_TEST_CASSANDRA_CONTACT_POINT` (default
+//! 127.0.0.1:9042) — no HTTP server in between — and skip themselves when no
+//! Cassandra is reachable (see helpers::skip_without_cassandra).
 //!
 //! One binary, one module per area, sharing tests/common/mod.rs, which is the
 //! in-tree descendant of the plug-in repo's helpers.rs.
diff --git a/crates/storage-cassandra/tests/ttl_integration.rs b/crates/storage-cassandra/tests/ttl_integration.rs
index 4b1f4230c..e97ef7ad4 100644
--- a/crates/storage-cassandra/tests/ttl_integration.rs
+++ b/crates/storage-cassandra/tests/ttl_integration.rs
@@ -3,8 +3,9 @@
 
 //! Integration tests for Cassandra TTL against a live Cassandra.
 //!
-//! Requires Cassandra on 127.0.0.1:9042. There is no Cassandra CI workflow, so
-//! these are run locally.
+//! Requires Cassandra at the contact point in
+//! `EXTENDDB_TEST_CASSANDRA_CONTACT_POINT` (default 127.0.0.1:9042). The
+//! integration-cassandra workflow runs these against a service container.
 
 #[path = "common/mod.rs"]
 mod helpers;
diff --git a/devtools/run-cassandra-tests b/devtools/run-cassandra-tests
index 962e43c58..5d77851b1 100755
--- a/devtools/run-cassandra-tests
+++ b/devtools/run-cassandra-tests
@@ -29,8 +29,10 @@
 #
 # Prerequisites:
 #   - A Cassandra node reachable at the contact point (default 127.0.0.1:9042)
-#     with PasswordAuthenticator enabled. The official cassandra:4.1 image does
-#     not honour CASSANDRA_AUTHENTICATOR, so patch it after starting:
+#     with PasswordAuthenticator enabled. The Rust direct tests read
+#     EXTENDDB_TEST_CASSANDRA_CONTACT_POINT (default 127.0.0.1:9042), which
+#     --contact-points above doesn't set. The official cassandra:4.1 image
+#     does not honour CASSANDRA_AUTHENTICATOR, so patch it after starting:
 #       docker run -d --name cassandra -p 127.0.0.1:9042:9042 \
 #         -e CASSANDRA_CLUSTER_NAME=extenddb-ci \
 #         -e HEAP_NEWSIZE=128M -e MAX_HEAP_SIZE=1024M \
@@ -67,7 +69,7 @@ while [[ $# -gt 0 ]]; do
         --output)         OUTPUT_DIR="$2"; shift 2 ;;
         --keep)           KEEP=true; shift ;;
         --)               shift; RUN_TESTS_ARGS=("$@"); break ;;
-        -h|--help)        sed -n '5,35p' "$0" | sed 's/^# \{0,1\}//'; exit 0 ;;
+        -h|--help)        sed -n '5,47p' "$0" | sed 's/^# \{0,1\}//'; exit 0 ;;
         *)                echo "error: unknown option: $1" >&2; exit 1 ;;
     esac
 done