diff --git a/plugins/inputs/swap/README.md b/plugins/inputs/swap/README.md
index 7abb0031a..f28606f55 100644
--- a/plugins/inputs/swap/README.md
+++ b/plugins/inputs/swap/README.md
@@ -1,6 +1,6 @@
 # Swap Input Plugin
 
-The swap plugin collects system swap metrics.
+The swap plugin collects system swap metrics. This plugin ONLY supports Linux.
 
 For more information on what swap memory is, read [All about Linux swap
 space](https://www.linux.com/news/all-about-linux-swap-space).
@@ -18,6 +18,7 @@ See the [CONFIGURATION.md][CONFIGURATION.md] for more details.
 
 ```toml @sample.conf
 # Read metrics about swap memory usage
+# This plugin ONLY supports Linux
 [[inputs.swap]]
   # no configuration
 ```
diff --git a/plugins/inputs/swap/sample.conf b/plugins/inputs/swap/sample.conf
index 16c28fdc2..d82a3e094 100644
--- a/plugins/inputs/swap/sample.conf
+++ b/plugins/inputs/swap/sample.conf
@@ -1,3 +1,4 @@
 # Read metrics about swap memory usage
+# This plugin ONLY supports Linux
 [[inputs.swap]]
   # no configuration