diff --git a/src/cfengine_cli/format.py b/src/cfengine_cli/format.py
index 81ac781..cdaf716 100644
--- a/src/cfengine_cli/format.py
+++ b/src/cfengine_cli/format.py
@@ -152,9 +152,9 @@ def stringify_single_line_nodes(nodes: list[Node]) -> str:
             result += " "
         if previous and previous.type == "=>":
             result += " "
-        if previous and previous.type == "{":
+        if previous and previous.type == "{" and node.type != "}":
             result += " "
-        if previous and node.type == "}":
+        if previous and node.type == "}" and previous.type != "{":
             result += " "
         result += string
         previous = node
diff --git a/tests/format/002_basics.expected.cf b/tests/format/002_basics.expected.cf
index d20e36d..a21c37e 100644
--- a/tests/format/002_basics.expected.cf
+++ b/tests/format/002_basics.expected.cf
@@ -5,6 +5,8 @@ body common control
   inputs => { "/var/cfengine/inputs/some_file.cf" };
   linux::
     inputs => { "/var/cfengine/inputs/other_file.cf" };
+  ubuntu::
+    inputs => {};
 }
 
 promise agent example
@@ -30,6 +32,8 @@ bundle agent main
         # Comment at atttribute level
         string => "some_value";
 
+      "empty_list" slist => {};
+
   classes:
     # Comment before promise
     "a" if => "b";
diff --git a/tests/format/002_basics.input.cf b/tests/format/002_basics.input.cf
index 54aafee..1a12122 100644
--- a/tests/format/002_basics.input.cf
+++ b/tests/format/002_basics.input.cf
@@ -5,6 +5,8 @@ body common control{
 inputs => { "/var/cfengine/inputs/some_file.cf" };
 linux::
 inputs => { "/var/cfengine/inputs/other_file.cf" };
+ubuntu::
+inputs => {};
 }
 
 promise agent example{
@@ -26,6 +28,9 @@ baz::
 if => "bar"
 # Comment at atttribute level
 string => "some_value";
+"empty_list"
+slist => {
+};
 classes:
 # Comment before promise
 "a" if => "b";
diff --git a/tests/format/010_stakeholder.expected.cf b/tests/format/010_stakeholder.expected.cf
index 529b9e9..14a4dbe 100644
--- a/tests/format/010_stakeholder.expected.cf
+++ b/tests/format/010_stakeholder.expected.cf
@@ -1,6 +1,7 @@
 bundle agent main
 {
   packages:
+    "platform-python-devel" -> {};
     "platform-python-devel" -> { "cfbs shebang", "ENT-1234" };
 
     "platform-python-devel" -> { "cfbs shebang", "ENT-1234" }
diff --git a/tests/format/010_stakeholder.input.cf b/tests/format/010_stakeholder.input.cf
index 78ab2d4..02ac6b2 100644
--- a/tests/format/010_stakeholder.input.cf
+++ b/tests/format/010_stakeholder.input.cf
@@ -1,6 +1,7 @@
 bundle agent main
 {
 packages:
+"platform-python-devel" -> { };
 "platform-python-devel" -> { "cfbs shebang", "ENT-1234" };
 "platform-python-devel" -> { "cfbs shebang", "ENT-1234" }
 comment => "foo";