diff --git a/docs/docs/user-guide/cli-options.md b/docs/docs/user-guide/cli-options.md
index 6fa271c0..82e16efe 100644
--- a/docs/docs/user-guide/cli-options.md
+++ b/docs/docs/user-guide/cli-options.md
@@ -18,7 +18,7 @@ Options:
       --crawlId, --id                       A user provided ID for this crawl or
                                              crawl configuration (can also be se
                                             t via CRAWL_ID env var, defaults to
-                                            hostname)                   [string]
+                                            Docker container hostname)  [string]
       --waitUntil                           Puppeteer page.goto() condition to w
                                             ait for before continuing, can be mu
                                             ltiple separated by ','
diff --git a/src/util/argParser.ts b/src/util/argParser.ts
index bb02d435..dfc5ec79 100644
--- a/src/util/argParser.ts
+++ b/src/util/argParser.ts
@@ -85,7 +85,7 @@ class ArgParser {
         crawlId: {
           alias: "id",
           describe:
-            "A user provided ID for this crawl or crawl configuration (can also be set via CRAWL_ID env var, defaults to hostname)",
+            "A user provided ID for this crawl or crawl configuration (can also be set via CRAWL_ID env var, defaults to Docker container hostname)",
           type: "string",
         },