diff --git a/nixos/modules/services/misc/zoneminder.nix b/nixos/modules/services/misc/zoneminder.nix
index 3bff04e7127d..d7f7324580c0 100644
--- a/nixos/modules/services/misc/zoneminder.nix
+++ b/nixos/modules/services/misc/zoneminder.nix
@@ -265,7 +265,7 @@ in {
                 }
 
                 location /cache/ {
-                  alias /var/cache/${dirName};
+                  alias /var/cache/${dirName}/;
                 }
 
                 location ~ \.php$ {