diff --git a/vyper/semantics/analysis/module.py b/vyper/semantics/analysis/module.py
index 651c92c4aa..02965eecd7 100644
--- a/vyper/semantics/analysis/module.py
+++ b/vyper/semantics/analysis/module.py
@@ -240,9 +240,11 @@ def _validate_self_namespace():
                 raise exc.with_annotation(node) from None
 
         if node.is_constant:
-            ExprVisitor().visit(node.value, type_)
             if not node.value:
                 raise VariableDeclarationException("Constant must be declared with a value", node)
+            
+            ExprVisitor().visit(node.value, type_)
+            
             if not check_variable_constancy(node.value, VariableConstancy.COMPILE_TIME_CONSTANT):
                 raise StateAccessViolation("Value must be a literal", node.value)