diff --git a/README.md b/README.md
index 6e38d5a..94660d2 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ Flags:
   -h, --help                   Show context-sensitive help (also try --help-long and --help-man).
       --smartctl.path="/usr/sbin/smartctl"  
                                The path to the smartctl binary
-      --smartctl.interval=60s  The interval between smarctl polls
+      --smartctl.interval=60s  The interval between smartctl polls
       --smartctl.device=SMARTCTL.DEVICE ...  
                                The device to monitor (repeatable)
       --smartctl.device-exclude=""
diff --git a/main.go b/main.go
index 3d4e5ba..937663a 100644
--- a/main.go
+++ b/main.go
@@ -64,7 +64,7 @@ var (
 		"The path to the smartctl binary",
 	).Default("/usr/sbin/smartctl").String()
 	smartctlInterval = kingpin.Flag("smartctl.interval",
-		"The interval between smarctl polls",
+		"The interval between smartctl polls",
 	).Default("60s").Duration()
 	smartctlDevices = kingpin.Flag("smartctl.device",
 		"The device to monitor (repeatable)",