diff --git a/desc/objectives/objective_funs.py b/desc/objectives/objective_funs.py
index 9a0e61be3..7cf55cd92 100644
--- a/desc/objectives/objective_funs.py
+++ b/desc/objectives/objective_funs.py
@@ -64,7 +64,7 @@
 """
 doc_deriv_mode = """
     deriv_mode : {"auto", "fwd", "rev"}
-        Specify how to compute jacobian matrix, either forward mode or reverse mode AD.
+        Specify how to compute Jacobian matrix, either forward mode or reverse mode AD.
         "auto" selects forward or reverse mode based on the size of the input and output
         of the objective. Has no effect on self.grad or self.hess which always use
         reverse mode and forward over reverse mode respectively.