diff --git a/common/app_support.rst b/common/app-support.rst
similarity index 100%
rename from common/app_support.rst
rename to common/app-support.rst
diff --git a/firstapp/source/index.rst b/firstapp/source/index.rst
index 1990ca4d8..cbd6b577f 100644
--- a/firstapp/source/index.rst
+++ b/firstapp/source/index.rst
@@ -26,7 +26,7 @@ Appendix
    :maxdepth: 1
 
    appendix
-   common/app_support.rst
+   common/app-support.rst
 
 Glossary
 ~~~~~~~~