diff --git a/docs/source/concepts/index.rst b/docs/source/concepts/index.rst
index 0b19770995843cbf4c315217dca801c28c2feb7e..1b782618cba1c6fadf4028997ac3f0b6db2831ea 100644
--- a/docs/source/concepts/index.rst
+++ b/docs/source/concepts/index.rst
@@ -17,4 +17,4 @@
    :maxdepth: 1
 
    *
-   calibration/index.rst
+   calibration/index