diff --git a/pkg/front_end/lib/src/fasta/incremental_compiler.dart b/pkg/front_end/lib/src/fasta/incremental_compiler.dart
index 425b5937d43..367d4640ce7 100644
--- a/pkg/front_end/lib/src/fasta/incremental_compiler.dart
+++ b/pkg/front_end/lib/src/fasta/incremental_compiler.dart
@@ -76,6 +76,7 @@ class IncrementalCompiler extends DeprecatedIncrementalKernelGenerator {
   @override
   Future<FastaDelta> computeDelta({Uri entryPoint}) async {
     ticker.reset();
+    entryPoint ??= context.options.inputs.single;
     return context.runInContext<Future<FastaDelta>>((CompilerContext c) async {
       if (platform == null) {
         UriTranslator uriTranslator = await c.options.getUriTranslator();
diff --git a/pkg/front_end/test/fasta/incremental_hello_test.dart b/pkg/front_end/test/fasta/incremental_hello_test.dart
index 54cd6bb8093..df123aa14c1 100644
--- a/pkg/front_end/test/fasta/incremental_hello_test.dart
+++ b/pkg/front_end/test/fasta/incremental_hello_test.dart
@@ -35,15 +35,15 @@ test() async {
     ..strongMode = false
     ..onProblem = problemHandler;
 
+  final Uri helloDart = Uri.base.resolve("pkg/front_end/testcases/hello.dart");
+
   final ProcessedOptions options =
-      new ProcessedOptions(optionBuilder, false, []);
+      new ProcessedOptions(optionBuilder, false, [helloDart]);
 
   IncrementalCompiler compiler =
       new IncrementalCompiler(new CompilerContext(options));
 
-  Uri helloDart = Uri.base.resolve("pkg/front_end/testcases/hello.dart");
-
-  FastaDelta delta = await compiler.computeDelta(entryPoint: helloDart);
+  FastaDelta delta = await compiler.computeDelta();
 
   // Expect that the new program contains at least the following libraries:
   // dart:core, dart:async, and hello.dart.