diff --git a/fastembed/late_interaction/colbert.py b/fastembed/late_interaction/colbert.py
index 4d65fc29..97c38570 100644
--- a/fastembed/late_interaction/colbert.py
+++ b/fastembed/late_interaction/colbert.py
@@ -191,6 +191,9 @@ def load_onnx_model(self) -> None:
             self.tokenizer.encode(symbol, add_special_tokens=False).ids[0]
             for symbol in string.punctuation
         }
+        current_max_length = self.tokenizer.truncation["max_length"]
+        # ensure not to overflow after adding document-marker
+        self.tokenizer.enable_truncation(max_length=current_max_length - 1)
 
     def embed(
         self,