diff --git a/libs/langchain/langchain/tools/e2b_data_analysis/unparse.py b/libs/langchain/langchain/tools/e2b_data_analysis/unparse.py
index 3f2486331f..6868202395 100644
--- a/libs/langchain/langchain/tools/e2b_data_analysis/unparse.py
+++ b/libs/langchain/langchain/tools/e2b_data_analysis/unparse.py
@@ -683,7 +683,7 @@ class Unparser:
                     first = False
                 else:
                     self.write(", ")
-                (self.dispatch(a),)
+                self.dispatch(a)
                 if d:
                     self.write("=")
                     self.dispatch(d)