diff --git a/src/dvc_render/vega_templates.py b/src/dvc_render/vega_templates.py
index d14fe8e..dfe4a1d 100644
--- a/src/dvc_render/vega_templates.py
+++ b/src/dvc_render/vega_templates.py
@@ -86,11 +86,8 @@ class Template:
     def __init__(
         self, content: Optional[dict[str, Any]] = None, name: Optional[str] = None
     ):
-        if (
-            content
-            and not isinstance(content, dict)
-            or self.DEFAULT_CONTENT
-            and not isinstance(self.DEFAULT_CONTENT, dict)
+        if (content and not isinstance(content, dict)) or (
+            self.DEFAULT_CONTENT and not isinstance(self.DEFAULT_CONTENT, dict)
         ):
             raise BadTemplateError
         self._original_content = content or self.DEFAULT_CONTENT
diff --git a/tests/test_vega.py b/tests/test_vega.py
index 8670d5f..72fc1d9 100644
--- a/tests/test_vega.py
+++ b/tests/test_vega.py
@@ -235,7 +235,7 @@ def test_fill_anchor_in_string(tmp_path):
         "transform": [
             {"joinaggregate": [{"op": "mean", "field": "lab", "as": "mean_y"}]},
             {
-                "calculate": "pow(datum.<DVC_METRIC_Y> - " "datum.<DVC_METRIC_X>,2)",
+                "calculate": "pow(datum.<DVC_METRIC_Y> - datum.<DVC_METRIC_X>,2)",
                 "as": "SR",
             },
             {"joinaggregate": [{"op": "sum", "field": "SR", "as": "SSR"}]},