diff --git a/modules/nixos/services/postgresql/default.nix b/modules/nixos/services/postgresql/default.nix
index 2cfa247..abc8e37 100755
--- a/modules/nixos/services/postgresql/default.nix
+++ b/modules/nixos/services/postgresql/default.nix
@@ -54,6 +54,8 @@ in
   ];
 
   system.activationScripts.postgresCommands = ''
-    chown -R ${service.name}:${service.name} ${service.paths.path0}
+    if [ ! -d "${service.paths.path0}/15" ]; then
+      chown -R ${service.name}:${service.name} ${service.paths.path0}
+    fi
   '';
 }