diff --git a/service/lib/agama/dbus/storage/manager.rb b/service/lib/agama/dbus/storage/manager.rb
index 9034066bd7..6019320ef5 100644
--- a/service/lib/agama/dbus/storage/manager.rb
+++ b/service/lib/agama/dbus/storage/manager.rb
@@ -115,7 +115,7 @@ def apply_storage_config(serialized_config)
         #
         # @return [String]
         def serialized_storage_config
-          @serialized_storage_config || generate_storage_config.to_json
+          @serialized_storage_config || JSON.pretty_generate(generate_storage_config)
         end
 
         def install
diff --git a/service/package/rubygem-agama-yast.changes b/service/package/rubygem-agama-yast.changes
index 0d58f88f74..8d358c5ca1 100644
--- a/service/package/rubygem-agama-yast.changes
+++ b/service/package/rubygem-agama-yast.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Jun 26 13:54:28 UTC 2024 - José Iván López González <jlopez@suse.com>
+
+- Generate JSON storage settings using pretty format
+  (gh#openSUSE/agama#1387).
+
 -------------------------------------------------------------------
 Wed Jun 26 10:32:08 UTC 2024 - José Iván López González <jlopez@suse.com>
 
diff --git a/service/test/agama/dbus/storage/manager_test.rb b/service/test/agama/dbus/storage/manager_test.rb
index b0d79d6ff3..16a8896b03 100644
--- a/service/test/agama/dbus/storage/manager_test.rb
+++ b/service/test/agama/dbus/storage/manager_test.rb
@@ -522,10 +522,14 @@
   end
 
   describe "#serialized_storage_config" do
+    def pretty_json(value)
+      JSON.pretty_generate(value)
+    end
+
     context "if the storage config has not been set yet" do
       context "and a proposal has not been calculated" do
         it "returns serialized empty storage config" do
-          expect(subject.serialized_storage_config).to eq({}.to_json)
+          expect(subject.serialized_storage_config).to eq(pretty_json({}))
         end
       end
 
@@ -547,7 +551,7 @@
             }
           }
 
-          expect(subject.serialized_storage_config).to eq(expected_config.to_json)
+          expect(subject.serialized_storage_config).to eq(pretty_json(expected_config))
         end
       end
     end