diff --git a/hosts/common/programs/waybar/waybar-top.nix b/hosts/common/programs/waybar/waybar-top.nix
index 03797dc9..dbb14451 100644
--- a/hosts/common/programs/waybar/waybar-top.nix
+++ b/hosts/common/programs/waybar/waybar-top.nix
@@ -25,7 +25,7 @@ in
     max-length = 50;
   };
 
-  "sway/workspaces".persistent_workspaces = lib.mkIf (persistWorkspaces != []) (
+  "sway/workspaces".persistent-workspaces = lib.mkIf (persistWorkspaces != []) (
     lib.genAttrs persistWorkspaces (_: [])
   );
 
diff --git a/hosts/modules/gui/sxmo/waybar-top.nix b/hosts/modules/gui/sxmo/waybar-top.nix
index a5a99b00..eabbaec4 100644
--- a/hosts/modules/gui/sxmo/waybar-top.nix
+++ b/hosts/modules/gui/sxmo/waybar-top.nix
@@ -21,7 +21,7 @@
   "sway/workspaces" = {
     all-outputs = true;
     # force the bar to always show even empty workspaces
-    persistent_workspaces = {
+    persistent-workspaces = {
       "1" = [];
       "2" = [];
       "3" = [];