diff --git a/nixos/modules/services/misc/zoneminder.nix b/nixos/modules/services/misc/zoneminder.nix
index cf56ae89b39..315d6bb901e 100644
--- a/nixos/modules/services/misc/zoneminder.nix
+++ b/nixos/modules/services/misc/zoneminder.nix
@@ -263,7 +263,7 @@ in {
                 }
 
                 location /cache/ {
-                  alias /var/cache/${dirName};
+                  alias /var/cache/${dirName}/;
                 }
 
                 location ~ \.php$ {