diff --git a/lib/api/helpers.rb b/lib/api/helpers.rb
index 226a7ddd50e4f32b1dc312de03ea4b00b8aca10f..0dc33eb20974d23c03e7c3ff4754cdbf91ac714a 100644
--- a/lib/api/helpers.rb
+++ b/lib/api/helpers.rb
@@ -257,10 +257,6 @@ module API
     # project helpers
 
     def filter_projects(projects)
-      if params[:membership]
-        projects = projects.merge(current_user.authorized_projects)
-      end
-
       if params[:owned]
         projects = projects.merge(current_user.owned_projects)
       end
diff --git a/lib/api/projects.rb b/lib/api/projects.rb
index ef09dfa0102bcf812b6174fb16ad2d7884ee8970..bb03480f1ee5cdb6fabaa3f9d3f022d55adf20fa 100644
--- a/lib/api/projects.rb
+++ b/lib/api/projects.rb
@@ -68,7 +68,10 @@ module API
         end
 
         def present_projects(options = {})
-          projects = ProjectsFinder.new(current_user: current_user).execute
+          finder_params = {}
+          finder_params[:non_public] = true if params[:membership].present?
+
+          projects = ProjectsFinder.new(current_user: current_user, params: finder_params).execute
           projects = filter_projects(projects)
           projects = projects.with_statistics if params[:statistics]
           projects = projects.with_issues_enabled if params[:with_issues_enabled]