diff --git a/ios/Podfile b/ios/Podfile
index 75ed93d8..6d8ed2b0 100644
--- a/ios/Podfile
+++ b/ios/Podfile
@@ -104,11 +104,6 @@ post_install do |installer|
     project.targets.each do |target|
       target.build_configurations.each do |config|
         config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '15.0'
-        config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
-                  '$(inherited)',
-                  ## dart: PermissionGroup.microphone
-                  'PERMISSION_MICROPHONE=1',
-                ]
         apply_permission_handler_macros(config)
       end
     end