diff --git a/docling/utils/layout_postprocessor.py b/docling/utils/layout_postprocessor.py
index effce01b..edc6b396 100644
--- a/docling/utils/layout_postprocessor.py
+++ b/docling/utils/layout_postprocessor.py
@@ -267,9 +267,14 @@ class LayoutPostprocessor:
         # Initial cell assignment
         clusters = self._assign_cells_to_clusters(clusters)
 
-        # Remove clusters with no cells (if keep_empty_clusters is False)
+        # Remove clusters with no cells (if keep_empty_clusters is False),
+        # but always keep clusters with label DocItemLabel.FORMULA
         if not self.options.keep_empty_clusters:
-            clusters = [cluster for cluster in clusters if cluster.cells]
+            clusters = [
+                cluster
+                for cluster in clusters
+                if cluster.cells or cluster.label == DocItemLabel.FORMULA
+            ]
 
         # Handle orphaned cells
         unassigned = self._find_unassigned_cells(clusters)