diff --git a/docs/source/explanation/concepts.md b/docs/source/explanation/concepts.md
index 32abae8c..f32b4eaf 100644
--- a/docs/source/explanation/concepts.md
+++ b/docs/source/explanation/concepts.md
@@ -3,7 +3,7 @@
 # JupyterHub: A conceptual overview
 
 ```{warning}
-This page could is missing cross-links to other parts of
+This page could be missing cross-links to other parts of
 the documentation. You can help by adding them!
 ```