diff --git a/shell/platform/darwin/macos/framework/Source/FLEEngine.mm b/shell/platform/darwin/macos/framework/Source/FLEEngine.mm
index 9a50499f309ea..cfb6669cd74f7 100644
--- a/shell/platform/darwin/macos/framework/Source/FLEEngine.mm
+++ b/shell/platform/darwin/macos/framework/Source/FLEEngine.mm
@@ -150,6 +150,7 @@ - (instancetype)initWithName:(NSString*)labelPrefix
 
   _project = project ?: [[FLEDartProject alloc] init];
   _messageHandlers = [[NSMutableDictionary alloc] init];
+  _allowHeadlessExecution = allowHeadlessExecution;
 
   return self;
 }