diff --git a/service/lib/agama/manager.rb b/service/lib/agama/manager.rb
index 2cb2ac6e5d..cf485320d1 100644
--- a/service/lib/agama/manager.rb
+++ b/service/lib/agama/manager.rb
@@ -211,7 +211,7 @@ def valid?
     def collect_logs(path: nil)
       opt = "-d #{path}" if !path.nil? && !path.empty?
 
-      %x(agama logs store #{opt}).strip
+      `agama logs store #{opt}`.strip
     end
 
     # Whatever has to be done at the end of installation
diff --git a/service/test/agama/manager_test.rb b/service/test/agama/manager_test.rb
index 9ab8e6f26d..f7005a415e 100644
--- a/service/test/agama/manager_test.rb
+++ b/service/test/agama/manager_test.rb
@@ -215,7 +215,7 @@
   describe "#collect_logs" do
     it "collects the logs and returns the path to the archive" do
       # %x returns the command output including trailing \n
-      expect(x).to receive(:`)
+      expect(subject).to receive(:`)
         .with("agama logs store ")
         .and_return("/tmp/y2log-hWBn95.tar.xz\n")