diff --git a/desc/objectives/_geometry.py b/desc/objectives/_geometry.py
index 018a2b820..747a3951c 100644
--- a/desc/objectives/_geometry.py
+++ b/desc/objectives/_geometry.py
@@ -1471,7 +1471,7 @@ def build(self, use_jit=True, verbose=1):
         super().build(use_jit=use_jit, verbose=verbose)
 
     def compute(self, params, constants=None):
-        """Compute mirro ratio.
+        """Compute mirror ratio.
 
         Parameters
         ----------