diff --git a/WebAssembly.md b/WebAssembly.md
index 403ca95..a0877fa 100644
--- a/WebAssembly.md
+++ b/WebAssembly.md
@@ -7,7 +7,7 @@ This article introduces a regular way to build an Ebiten app as a WebAssembly po
 * Go 1.11
 * Ebiten master branch (1.8.0-alpha.0.XXX) / 2.0.0-alpha
 
-# 1. WasmServe
+# Option 1. WasmServe
 
 ```sh
 go get github.com/hajimehoshi/wasmserve
@@ -17,7 +17,7 @@ wasmserve
 
 Then access `http://localhost:8080/`.
 
-# 2. Regular
+# Option 2. Regular
 
 ## Compile your game