diff --git a/vyper/builtins/_signatures.py b/vyper/builtins/_signatures.py
index 6e6cf4c662..29a35e63e3 100644
--- a/vyper/builtins/_signatures.py
+++ b/vyper/builtins/_signatures.py
@@ -6,7 +6,7 @@
 from vyper.codegen.expr import Expr
 from vyper.codegen.ir_node import IRnode
 from vyper.exceptions import CompilerPanic, TypeMismatch, UnfoldableNode
-from vyper.semantics.analysis.base import Modifiability
+from vyper.semantics.analysis.base import Modifiability, StateMutability
 from vyper.semantics.analysis.utils import (
     check_modifiability,
     get_exact_type_from_node,
@@ -87,6 +87,7 @@ class BuiltinFunctionT(VyperType):
     _return_type: Optional[VyperType] = None
     _equality_attrs = ("_id",)
     _is_terminus = False
+    mutability: StateMutability = StateMutability.PURE
 
     @property
     def modifiability(self):
diff --git a/vyper/semantics/analysis/local.py b/vyper/semantics/analysis/local.py
index 88cf153406..3fb66f8516 100644
--- a/vyper/semantics/analysis/local.py
+++ b/vyper/semantics/analysis/local.py
@@ -742,8 +742,8 @@ def visit_Call(self, node: vy_ast.Call, typ: VyperType) -> None:
             for arg, arg_type in zip(node.args, func_type.arg_types):
                 self.visit(arg, arg_type)
         else:
-            # builtin functions
-            if self.function_analyzer:
+            # builtin functions and interfaces
+            if self.function_analyzer and hasattr(func_type, "mutability"):
                 self._check_call_mutability(func_type.mutability) # type: ignore
 
             arg_types = func_type.infer_arg_types(node, expected_return_typ=typ)  # type: ignore