diff --git a/horsch/github.nix b/horsch/github.nix
index 1bb5783..92c4697 100644
--- a/horsch/github.nix
+++ b/horsch/github.nix
@@ -23,6 +23,12 @@
       enable = true;
 
       settings = {
+        defaults = {
+          preview = {
+            open = true;
+            width = 64;
+          };
+        };
       };
     };
   };