diff --git a/torch/_linalg_utils.py b/torch/_linalg_utils.py
index fe168cb33c4b..43c8b65767e0 100644
--- a/torch/_linalg_utils.py
+++ b/torch/_linalg_utils.py
@@ -8,7 +8,7 @@ from torch import Tensor
 
 
 def is_sparse(A):
-    """Check if tensor A is a sparse tensor"""
+    """Check if tensor A is a sparse COO tensor. All other sparse storage formats (CSR, CSC, etc...) will return False."""
     if isinstance(A, torch.Tensor):
         return A.layout == torch.sparse_coo