diff --git a/packages/flutter_tools/lib/src/commands/build_web.dart b/packages/flutter_tools/lib/src/commands/build_web.dart
index 7244c452042..a5db7652f8f 100644
--- a/packages/flutter_tools/lib/src/commands/build_web.dart
+++ b/packages/flutter_tools/lib/src/commands/build_web.dart
@@ -102,7 +102,7 @@ class BuildWebCommand extends BuildSubCommand {
     argParser.addSeparator('WebAssembly compilation options');
     argParser.addFlag(
       FlutterOptions.kWebWasmFlag,
-      help: 'Compile to WebAssembly rather than JavaScript.\n$kWasmMoreInfo',
+      help: 'Compile to WebAssembly (with fallback to JavaScript).\n$kWasmMoreInfo',
       negatable: false,
     );
     argParser.addFlag(