diff --git a/modules/core/hibernation.nix b/modules/core/hibernation.nix
index a71ffd37..51f196d0 100644
--- a/modules/core/hibernation.nix
+++ b/modules/core/hibernation.nix
@@ -12,8 +12,8 @@ in
     };
 
     resumeDevice = mkOption {
-      type = types.str;
-      default = "/dev/sda1";
+      type = types.nullOr types.str;
+      default = null;
       description = "The location of the hibernation resume swap file.";
     };
 
@@ -26,7 +26,7 @@ in
 
   config = {
     boot = mkIf cfg.enable {
-      resumeDevice = cfg.resumeDevice;
+      resumeDevice = mkIf (cfg.resumeDevice != null) cfg.resumeDevice;
       kernelParams = mkIf (cfg.resumeOffset != null) [ "resume_offset=${builtins.toString cfg.resumeOffset}" ];
     };
   };