diff --git a/README.md b/README.md
index fe171e1..2e733be 100644
--- a/README.md
+++ b/README.md
@@ -10,13 +10,13 @@ The calculation for how big a file would take is effectively the largest IP - th
 $ cidr-encoder -h
 Usage of cidr-encoder:
   -calc
-        Calculate the size of the encoded file
+        Calculate the size of the encoded file. Reads from STDIN.
   -encode
-        Encode the CIDRs
+        Encode the CIDRs. Reads from STDIN.
   -name string
-        The file base name to use as the ACL file name(e.g test.acl name is test)
+        The file base name to use as the ACL file name(e.g test.acl name is test).
   -search string
-        Search for a IP in the CIDRs
+        Search for a IP in the CIDRs.
 ```
 
 `-calc`, `encode`, and `search` are all mutually exclusive but the priority in the event that all are specified are `calc` then `encode` then `search`.
diff --git a/cmd/cli/main.go b/cmd/cli/main.go
index e2003bb..f39ba1a 100644
--- a/cmd/cli/main.go
+++ b/cmd/cli/main.go
@@ -16,10 +16,10 @@ import (
 )
 
 var (
-	name   = flag.String("name", "", "The file base name to use as the ACL file name(e.g test.acl name is test)")
-	encode = flag.Bool("encode", false, "Encode the CIDRs")
-	search = flag.String("search", "", "Search for a IP in the CIDRs")
-	calc   = flag.Bool("calc", false, "Calculate the size of the encoded file")
+	name   = flag.String("name", "", "The file base name to use as the ACL file name(e.g test.acl name is test).")
+	encode = flag.Bool("encode", false, "Encode the CIDRs. Reads from STDIN.")
+	search = flag.String("search", "", "Search for a IP in the CIDRs.")
+	calc   = flag.Bool("calc", false, "Calculate the size of the encoded file. Reads from STDIN.")
 )
 
 func main() {