diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ba3e8e9..8bf0101 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -71,7 +71,7 @@ repos:
         additional_dependencies: [tomli]
         files: ^(graphblas_algorithms|docs)/
   - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.0.252
+    rev: v0.0.253
     hooks:
       - id: ruff
   - repo: https://github.com/pre-commit/pre-commit-hooks
diff --git a/graphblas_algorithms/classes/graph.py b/graphblas_algorithms/classes/graph.py
index 1296ed5..718264f 100644
--- a/graphblas_algorithms/classes/graph.py
+++ b/graphblas_algorithms/classes/graph.py
@@ -237,15 +237,15 @@ def get_iso_value(G, mask=None):
                 cache["iso_value"] = A.ss.iso_value
             else:
                 cache["iso_value"]
+
+        # min_val, max_val = G.get_properties('min_element+ max_element+')
+        # SuiteSparse:GraphBLAS
+        elif A.ss.is_iso:
+            cache["iso_value"] = A.ss.iso_value
+            cache["is_iso"] = True
         else:
-            # min_val, max_val = G.get_properties('min_element+ max_element+')
-            # SuiteSparse:GraphBLAS
-            if A.ss.is_iso:
-                cache["iso_value"] = A.ss.iso_value
-                cache["is_iso"] = True
-            else:
-                cache["iso_value"] = None
-                cache["is_iso"] = False
+            cache["iso_value"] = None
+            cache["is_iso"] = False
     return cache["iso_value"]