diff --git a/fastlane/lib/fastlane/actions/dsym_zip.rb b/fastlane/lib/fastlane/actions/dsym_zip.rb
index c6e12eba87a..ec3314b13f5 100644
--- a/fastlane/lib/fastlane/actions/dsym_zip.rb
+++ b/fastlane/lib/fastlane/actions/dsym_zip.rb
@@ -61,7 +61,7 @@ def self.available_options
                                        description: 'Whether or not all dSYM files are to be included. Optional, default is false in which only your app dSYM is included',
                                        default_value: false,
                                        optional: true,
-                                       is_string: false,
+                                       type: Boolean,
                                        env_name: 'DSYM_ZIP_ALL')
         ]
       end