1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/nixos/modules/services/network-filesystems/ceph.nix b/nixpkgs/nixos/modules/services/network-filesystems/ceph.nix
index 632c3fb1059d..d833062c4737 100644
--- a/nixpkgs/nixos/modules/services/network-filesystems/ceph.nix
+++ b/nixpkgs/nixos/modules/services/network-filesystems/ceph.nix
@@ -316,7 +316,7 @@ in
     client = {
       enable = mkEnableOption "Ceph client configuration";
       extraConfig = mkOption {
-        type = with types; attrsOf str;
+        type = with types; attrsOf (attrsOf str);
         default = {};
         example = ''
           {