diff --git a/packages/flutter_tools/lib/src/commands/logs.dart b/packages/flutter_tools/lib/src/commands/logs.dart
index dd52f2f00d5..a16b23fd9b7 100644
--- a/packages/flutter_tools/lib/src/commands/logs.dart
+++ b/packages/flutter_tools/lib/src/commands/logs.dart
@@ -29,7 +29,7 @@ class LogsCommand extends FlutterCommand {
   Device device;
 
   @override
-  Future<Null> verifyThenRunCommand() async {
+  Future<FlutterCommandResult> verifyThenRunCommand() async {
     device = await findTargetDevice();
     if (device == null)
       throwToolExit(null);
diff --git a/packages/flutter_tools/lib/src/commands/screenshot.dart b/packages/flutter_tools/lib/src/commands/screenshot.dart
index 5e9348f2ecd..c4233d75930 100644
--- a/packages/flutter_tools/lib/src/commands/screenshot.dart
+++ b/packages/flutter_tools/lib/src/commands/screenshot.dart
@@ -64,7 +64,7 @@ class ScreenshotCommand extends FlutterCommand {
   Device device;
 
   @override
-  Future<Null> verifyThenRunCommand() async {
+  Future<FlutterCommandResult> verifyThenRunCommand() async {
     device = await findTargetDevice();
     if (device == null)
       throwToolExit('Must have a connected device');