diff --git a/dbterd/adapters/filter.py b/dbterd/adapters/filter.py
index aa1e56f..d2bc9fd 100644
--- a/dbterd/adapters/filter.py
+++ b/dbterd/adapters/filter.py
@@ -113,7 +113,7 @@ def is_satisfied_by_exact(table: Table, rule: str = ""):
     """
     if not rule:
         return True
-    return table.node_name == rule
+    return table.node_name.lower() == rule
 
 
 def is_satisfied_by_schema(table: Table, rule: str = ""):
diff --git a/tests/unit/adapters/test_filter.py b/tests/unit/adapters/test_filter.py
index 12d5426..e8f3479 100644
--- a/tests/unit/adapters/test_filter.py
+++ b/tests/unit/adapters/test_filter.py
@@ -53,6 +53,16 @@ def test_has_unsupported_rule(self, rule, expected):
                 "model.dummy.table1",
                 True,
             ),
+            (
+                Table(
+                    name="irrelevant",
+                    node_name="model.dummy.Table1",
+                    database="dummydb",
+                    schema="dummyschema",
+                ),
+                "model.dummy.table1",
+                True,
+            ),
         ],
     )
     def test_is_satisfied_by_exact(self, table, rule, expected):