diff --git a/README.md b/README.md
index 9452ef7ee5a3e6e3454597258a54819b7f4f8521..1d6a8e17134d2cbb91c6038e1f3e7011617be90a 100644
--- a/README.md
+++ b/README.md
@@ -7,9 +7,9 @@ Run the command with `{}` where you want your arguments to be. Currently, only o
 
 Example (Ion syntax):
 ```ion
-parallel -progress 'echo {}' {1..1000}
+parallel --progress 'echo {}' {1..1000}
 ```
 or in POSIX shells (with the seq command):
 ```bash
-parallel -progress 'echo {}' $(seq 1 999)
+parallel --progress 'echo {}' $(seq 1 999)
 ```