diff --git a/substrate/core/cli/src/lib.rs b/substrate/core/cli/src/lib.rs
index a435a53d51..7aeec0899f 100644
--- a/substrate/core/cli/src/lib.rs
+++ b/substrate/core/cli/src/lib.rs
@@ -358,7 +358,7 @@ where
 		return Ok(Action::ExecutedInternally);
 	}
 
-	if let Some(matches) = matches.subcommand_matches("purge_chain") {
+	if let Some(matches) = matches.subcommand_matches("purge-chain") {
 		purge_chain::<F>(matches, spec)?;
 		return Ok(Action::ExecutedInternally);
 	}