diff --git a/desc/geometry/surface.py b/desc/geometry/surface.py
index 9bfa51267..817eee4a1 100644
--- a/desc/geometry/surface.py
+++ b/desc/geometry/surface.py
@@ -381,7 +381,7 @@ def from_qp_model(
         References
         ----------
         .. [1] Goodman, Alan, et al. "Constructing Precisely Quasi-Isodynamic
-        Magnetic Fields." Journal of Plasma Physics 89.5 (2023): 905890504.
+          Magnetic Fields." Journal of Plasma Physics 89.5 (2023): 905890504.
 
         """
         assert mirror_ratio <= 1