diff --git a/tests/parser/syntax/test_enum.py b/tests/parser/syntax/test_enum.py
index 267de2180f..fe7b9fc83d 100644
--- a/tests/parser/syntax/test_enum.py
+++ b/tests/parser/syntax/test_enum.py
@@ -137,6 +137,12 @@ def run() -> Order:
         })
     """,
     "enum Foo:\n" + "\n".join([f"    member{i}" for i in range(256)]),
+    """
+a: constant(uint256) = 1
+
+enum A:
+    a
+    """,
 ]
 
 
diff --git a/vyper/ast/folding.py b/vyper/ast/folding.py
index baf3f48336..8d89d85b41 100644
--- a/vyper/ast/folding.py
+++ b/vyper/ast/folding.py
@@ -284,6 +284,10 @@ def replace_constant(
             if assign and node in assign.target.get_descendants(include_self=True):
                 continue
 
+        # do not replace enum members
+        if node.get_ancestor(vy_ast.EnumDef):
+            continue
+
         try:
             # note: _replace creates a copy of the replacement_node
             new_node = _replace(node, replacement_node, type_=type_)