diff --git a/Sources/LibMakeColors/Importers/Importer.swift b/Sources/LibMakeColors/Importers/Importer.swift
index 3fb9da2..426fec8 100644
--- a/Sources/LibMakeColors/Importers/Importer.swift
+++ b/Sources/LibMakeColors/Importers/Importer.swift
@@ -8,6 +8,6 @@ protocol Importer {
 
 extension Importer {
     static var option: String {
-        String(String(describing: self).droppingSuffix("Importer"))
+        String(describing: self).droppingSuffix("Importer").lowercased()
     }
 }