diff --git a/src/binaryen-c.cpp b/src/binaryen-c.cpp
index 658a43e770c..903a179c67a 100644
--- a/src/binaryen-c.cpp
+++ b/src/binaryen-c.cpp
@@ -2008,8 +2008,8 @@ void BinaryenModulePrintAsmjs(BinaryenModuleRef module) {
   }
 
   Module* wasm = (Module*)module;
-  Wasm2JsBuilder::Flags builderFlags;
-  Wasm2JsBuilder wasm2js(builderFlags);
+  Wasm2JSBuilder::Flags builderFlags;
+  Wasm2JSBuilder wasm2js(builderFlags);
   Ref asmjs = wasm2js.processWasm(wasm);
   JSPrinter jser(true, true, asmjs);
   jser.printAst();
diff --git a/src/tools/wasm2js.cpp b/src/tools/wasm2js.cpp
index f9c030a529e..5f96740f98c 100644
--- a/src/tools/wasm2js.cpp
+++ b/src/tools/wasm2js.cpp
@@ -28,7 +28,7 @@ using namespace cashew;
 using namespace wasm;
 
 int main(int argc, const char *argv[]) {
-  Wasm2JsBuilder::Flags builderFlags;
+  Wasm2JSBuilder::Flags builderFlags;
   Options options("wasm2js", "Transform .wasm/.wast files to asm.js");
   options
       .add("--output", "-o", "Output file (stdout if not specified)",
@@ -75,7 +75,7 @@ int main(int argc, const char *argv[]) {
       reader.read(input, wasm, "");
 
       if (options.debug) std::cerr << "asming..." << std::endl;
-      Wasm2JsBuilder wasm2js(builderFlags);
+      Wasm2JSBuilder wasm2js(builderFlags);
       asmjs = wasm2js.processWasm(&wasm);
 
     // Otherwise assume it's a `*.wast` file and go from there
@@ -90,7 +90,7 @@ int main(int argc, const char *argv[]) {
       SExpressionWasmBuilder builder(wasm, *(*root)[0]);
 
       if (options.debug) std::cerr << "asming..." << std::endl;
-      Wasm2JsBuilder wasm2js(builderFlags);
+      Wasm2JSBuilder wasm2js(builderFlags);
       asmjs = wasm2js.processWasm(&wasm);
 
       if (options.extra["asserts"] == "1") {