diff --git a/src/textual/widget.py b/src/textual/widget.py
index 68c88b0f39..96144b2df0 100644
--- a/src/textual/widget.py
+++ b/src/textual/widget.py
@@ -4206,7 +4206,7 @@ def render_line(self, y: int) -> Strip:
         Returns:
             A rendered line.
         """
-        if self.BLANK:
+        if self.BLANK is True:
             return Strip.blank(self.size.width, self.visual_style.rich_style)
 
         if self._dirty_regions:
@@ -4227,7 +4227,7 @@ def render_lines(self, crop: Region) -> list[Strip]:
         Returns:
             A list of list of segments.
         """
-        if self.BLANK:
+        if self.BLANK is True:
             strips = [
                 Strip.blank(crop.width, self.visual_style.rich_style)
             ] * crop.height