diff --git a/Sources/FontTool/main.swift b/Sources/FontTool/main.swift
index 53db7ca..78a8075 100644
--- a/Sources/FontTool/main.swift
+++ b/Sources/FontTool/main.swift
@@ -15,7 +15,7 @@ struct FontTool: ParsableCommand {
     
     @OptionGroup var options: FontOptions
     
-    var extensionFileName: String { "\(options.extensionName)options.+Font\(options.extensionSuffix).swift" }
+    var extensionFileName: String { "\(options.extensionName)+Font\(options.extensionSuffix).swift" }
     var extensionFilePath: String { "\(options.extensionOutputPath)/\(extensionFileName)" }
     
     public func run() throws {