diff --git a/flameshow/models.py b/flameshow/models.py
index 4d04088..e4396e7 100644
--- a/flameshow/models.py
+++ b/flameshow/models.py
@@ -101,9 +101,9 @@ def render_one_frame_detail(
         raise NotImplementedError
 
     @property
-    def title(self) -> str:
+    def title(self) -> Text:
         """Full name which will be displayed in the frame detail panel"""
-        return self.name
+        return Text(self.name)
 
     @property
     def color_key(self):
diff --git a/tests/stackcollapse_data/simple_square.txt b/tests/stackcollapse_data/simple_square.txt
new file mode 100644
index 0000000..83bd2b1
--- /dev/null
+++ b/tests/stackcollapse_data/simple_square.txt
@@ -0,0 +1,2 @@
+a;b;[c] 1
+a;[b];d 4
diff --git a/tests/test_stackcollapse_parse/test_model.py b/tests/test_stackcollapse_parse/test_model.py
index 67ec9ab..0ef68ec 100644
--- a/tests/test_stackcollapse_parse/test_model.py
+++ b/tests/test_stackcollapse_parse/test_model.py
@@ -1,3 +1,4 @@
+from rich.text import Text
 from flameshow.parsers.stackcollapse_parser import StackCollapseFrame
 
 
@@ -6,4 +7,18 @@ def test_frame_model_render():
         "java::abc", 1, parent=None, children=[], values=[13]
     )
     render_result = f.render_one_frame_detail(f, 0, "count")
-    assert render_result == ["java::abc\n"]
+    assert len(render_result) == 1
+    item = render_result[0]
+    assert item.markup == "java::abc\n"
+
+
+def test_frame_model_render_with_square():
+    f = StackCollapseFrame("[abc]", 1, parent=None, children=[], values=[13])
+    render_result = f.render_one_frame_detail(f, 0, "count")
+    assert len(render_result) == 1
+    item = render_result[0]
+    assert item.markup == "\\[abc]\n"
+
+    title = f.title
+    assert isinstance(title, Text)
+    assert title.plain == "[abc]"
diff --git a/tests/test_stackcollapse_parse/test_parser.py b/tests/test_stackcollapse_parse/test_parser.py
index 3bce65c..862a94a 100644
--- a/tests/test_stackcollapse_parse/test_parser.py
+++ b/tests/test_stackcollapse_parse/test_parser.py
@@ -10,24 +10,20 @@ def test_parse_simple_text_data(simple_collapse_data):
 
     assert frame2json(profile.root_stack) == {
         "root": {
-            "children": [
-                {
-                    "a": {
-                        "children": [
-                            {
-                                "b": {
-                                    "children": [
-                                        {"c": {"children": [], "values": [5]}},
-                                        {"d": {"children": [], "values": [4]}},
-                                    ],
-                                    "values": [14],
-                                }
-                            }
-                        ],
-                        "values": [14],
-                    }
+            "children": [{
+                "a": {
+                    "children": [{
+                        "b": {
+                            "children": [
+                                {"c": {"children": [], "values": [5]}},
+                                {"d": {"children": [], "values": [4]}},
+                            ],
+                            "values": [14],
+                        }
+                    }],
+                    "values": [14],
                 }
-            ],
+            }],
             "values": [14],
         },
     }
@@ -98,16 +94,14 @@ def test_validate_simple_text_data_contains_numbers_somtimes_parsing():
             "children": [
                 {
                     "a": {
-                        "children": [
-                            {
-                                "b": {
-                                    "children": [
-                                        {"c": {"children": [], "values": [10]}}
-                                    ],
-                                    "values": [10],
-                                }
+                        "children": [{
+                            "b": {
+                                "children": [
+                                    {"c": {"children": [], "values": [10]}}
+                                ],
+                                "values": [10],
                             }
-                        ],
+                        }],
                         "values": [10],
                     }
                 },
@@ -125,28 +119,24 @@ def test_space_and_numbers_in_stackcollapse_symbols():
     profile = StackCollapseParser("a.txt").parse(data)
     assert frame2json(profile.root_stack) == {
         "root": {
-            "children": [
-                {
-                    "a 1": {
-                        "children": [
-                            {
-                                "b 2": {
-                                    "children": [
-                                        {
-                                            "c 3": {
-                                                "children": [],
-                                                "values": [10],
-                                            }
-                                        }
-                                    ],
-                                    "values": [10],
+            "children": [{
+                "a 1": {
+                    "children": [{
+                        "b 2": {
+                            "children": [
+                                {
+                                    "c 3": {
+                                        "children": [],
+                                        "values": [10],
+                                    }
                                 }
-                            }
-                        ],
-                        "values": [10],
-                    }
+                            ],
+                            "values": [10],
+                        }
+                    }],
+                    "values": [10],
                 }
-            ],
+            }],
             "values": [10],
         },
     }