diff --git a/docs/source/concepts.rst b/docs/source/concepts.rst
index bb91e261ba39..f6b4a074f6e3 100644
--- a/docs/source/concepts.rst
+++ b/docs/source/concepts.rst
@@ -70,8 +70,8 @@ Argument ``batch`` in ``train_step`` function is user-defined and can contain an
     optimizer_1 = ...
     optimizer_2 = ...
     # ...
-    critertion_1 = ...
-    critertion_2 = ...
+    criterion_1 = ...
+    criterion_2 = ...
     # ...
 
     def train_step(trainer, batch):