diff --git a/slither/utils/halstead.py b/slither/utils/halstead.py
index 93552c9cd3..a5ab41cc9b 100644
--- a/slither/utils/halstead.py
+++ b/slither/utils/halstead.py
@@ -86,6 +86,8 @@ def populate_operators_and_operands(self):
         """Populate the operators and operands lists."""
         operators = []
         operands = []
+        if not hasattr(self.contract, "functions"):
+            return
         for func in self.contract.functions:
             for node in func.nodes:
                 for operation in node.irs: