diff --git a/harmony_service/adapter.py b/harmony_service/adapter.py
index 3dce207..11dc362 100644
--- a/harmony_service/adapter.py
+++ b/harmony_service/adapter.py
@@ -56,8 +56,7 @@ def validate_message(self):
         if has_scale_extents(self.message) or has_scale_sizes(self.message):
             if not has_crs(self.message):
                 raise HyBIGInvalidMessageError(
-                    'Harmony message must include a crs '
-                    'with scaleExtent or scaleSizes.'
+                    'Harmony message must include a crs with scaleExtent or scaleSizes.'
                 )
 
         if not has_valid_scale_extents(self.message):
diff --git a/hybig/browse.py b/hybig/browse.py
index 2246666..6d2b5a3 100644
--- a/hybig/browse.py
+++ b/hybig/browse.py
@@ -456,7 +456,7 @@ def get_tiled_filename(input_file: Path, locator: dict | None = None) -> Path:
     """
     if locator is not None:
         return input_file.with_suffix(
-            f".r{int(locator['row']):02d}c{int(locator['col']):02d}{input_file.suffix}"
+            f'.r{int(locator["row"]):02d}c{int(locator["col"]):02d}{input_file.suffix}'
         )
     return input_file