diff --git a/Tools/wasm/wasm_build.py b/Tools/wasm/wasm_build.py
index bcb80212362b71..e9338583613b54 100755
--- a/Tools/wasm/wasm_build.py
+++ b/Tools/wasm/wasm_build.py
@@ -1,9 +1,9 @@
 #!/usr/bin/env python3
 """Build script for Python on WebAssembly platforms.
 
-  $ ./Tools/wasm/wasm_builder.py emscripten-browser build repl
-  $ ./Tools/wasm/wasm_builder.py emscripten-node-dl build test
-  $ ./Tools/wasm/wasm_builder.py wasi build test
+  $ ./Tools/wasm/wasm_build.py emscripten-browser build repl
+  $ ./Tools/wasm/wasm_build.py emscripten-node-dl build test
+  $ ./Tools/wasm/wasm_build.py wasi build test
 
 Primary build targets are "emscripten-node-dl" (NodeJS, dynamic linking),
 "emscripten-browser", and "wasi".
@@ -18,7 +18,7 @@
 The 'build' Python interpreter must be rebuilt every time Python's byte code
 changes.
 
-  ./Tools/wasm/wasm_builder.py --clean build build
+  ./Tools/wasm/wasm_build.py --clean build build
 
 """
 import argparse
@@ -291,7 +291,7 @@ def _check_emscripten() -> None:
 EMSCRIPTEN = Platform(
     "emscripten",
     pythonexe="python.js",
-    config_site=WASMTOOLS / "config.site-wasm32-emscripten",
+    config_site=WASMTOOLS / "emscripten"/ "config.site-wasm32-emscripten",
     configure_wrapper=EMSCRIPTEN_ROOT / "emconfigure",
     ports=EMSCRIPTEN_ROOT / "embuilder",
     cc=EMSCRIPTEN_ROOT / "emcc",
@@ -319,7 +319,7 @@ def _check_wasi() -> None:
 WASI = Platform(
     "wasi",
     pythonexe="python.wasm",
-    config_site=WASMTOOLS / "config.site-wasm32-wasi",
+    config_site=WASMTOOLS / "wasi" / "config.site-wasm32-wasi",
     configure_wrapper=WASMTOOLS / "wasi-env",
     ports=None,
     cc=WASI_SDK_PATH / "bin" / "clang",