diff --git a/docs/deployment.md b/docs/deployment.md
index cec0d8ef8..8aabe1b18 100644
--- a/docs/deployment.md
+++ b/docs/deployment.md
@@ -45,7 +45,7 @@ Options:
 
   --workers INTEGER               Number of worker processes. Defaults to the
                                   $WEB_CONCURRENCY environment variable if
-                                  available. Not valid with --reload.
+                                  available, or 1. Not valid with --reload.
 
   --loop [auto|asyncio|uvloop]    Event loop implementation.  [default: auto]
   --http [auto|h11|httptools]     HTTP protocol implementation.  [default:
diff --git a/docs/index.md b/docs/index.md
index be1a096ca..ae587f2ee 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -115,7 +115,7 @@ Options:
 
   --workers INTEGER               Number of worker processes. Defaults to the
                                   $WEB_CONCURRENCY environment variable if
-                                  available. Not valid with --reload.
+                                  available, or 1. Not valid with --reload.
 
   --loop [auto|asyncio|uvloop]    Event loop implementation.  [default: auto]
   --http [auto|h11|httptools]     HTTP protocol implementation.  [default:
diff --git a/docs/settings.md b/docs/settings.md
index 2a717ab93..8b8398f83 100644
--- a/docs/settings.md
+++ b/docs/settings.md
@@ -24,7 +24,7 @@ equivalent keyword arguments, eg. `uvicorn.run("example:app", port=5000, reload=
 
 ## Production
 
-* `--workers <int>` - Use multiple worker processes. Defaults to the value of the `$WEB_CONCURRENCY` environment variable.
+* `--workers <int>` - Use multiple worker processes. Defaults to the `$WEB_CONCURRENCY` environment variable if available, or 1.
 
 ## Logging
 
diff --git a/uvicorn/main.py b/uvicorn/main.py
index 6bfc631f0..d7e866ec4 100644
--- a/uvicorn/main.py
+++ b/uvicorn/main.py
@@ -90,7 +90,7 @@ def print_version(ctx, param, value):
     default=None,
     type=int,
     help="Number of worker processes. Defaults to the $WEB_CONCURRENCY environment"
-    " variable if available. Not valid with --reload.",
+    " variable if available, or 1. Not valid with --reload.",
 )
 @click.option(
     "--loop",