diff --git a/README.md b/README.md
index e8f23c0..e274ac7 100644
--- a/README.md
+++ b/README.md
@@ -26,5 +26,5 @@ $ python upload-coredump.py /path/to/core /path/to/executable
 OR
 
 ````
-$ python upload-coredump.py /path/to/core /path/to/executable https://something@your-sentry-dsn/42
+$ python upload-coredump.py /path/to/core /path/to/executable --sentry-dsn https://something@your-sentry-dsn/42
 ````
\ No newline at end of file