diff --git a/static/admin/config.yml b/static/admin/config.yml
index 90b98f7..e41355f 100644
--- a/static/admin/config.yml
+++ b/static/admin/config.yml
@@ -72,7 +72,7 @@ collections:
       - name: 3d
         label: 3D Modeling & Analysis
         preview: false
-        file: content/classes/3d-modeling-analysis/index.md
+        file: content/classes/3d-modeling-analysis/_index.md
         fields:
           - label: Title
             name: title
@@ -86,7 +86,7 @@ collections:
       - name: drafting
         label: Intro to Drafting & Design
         preview: false
-        file: content/classes/intro-to-drafting/index.md
+        file: content/classes/intro-to-drafting/_index.md
         fields:
           - label: Title
             name: title
@@ -100,7 +100,7 @@ collections:
       - name: survey
         label: Survey of Engineering Graphics
         preview: false
-        file: content/classes/survey-graphics/index.md
+        file: content/classes/survey-graphics/_index.md
         fields:
           - label: Title
             name: title