diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index 62922d442697..84090cba867e 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -876,7 +876,7 @@ let
       ZRAM_MULTI_COMP               = whenAtLeast "6.2" yes;
       ZRAM_DEF_COMP_ZSTD            = whenAtLeast "5.11" yes;
       ZSWAP                         = option yes;
-      ZSWAP_COMPRESSOR_DEFAULT_ZSTD = whenAtLeast "5.7" yes;
+      ZSWAP_COMPRESSOR_DEFAULT_ZSTD = whenAtLeast "5.7" (mkOptionDefault yes);
       ZPOOL                         = yes;
       ZSMALLOC                      = option yes;
     };
diff --git a/pkgs/os-specific/linux/kernel/zen-kernels.nix b/pkgs/os-specific/linux/kernel/zen-kernels.nix
index 1f36e36c2335..d2e32e4b09a7 100644
--- a/pkgs/os-specific/linux/kernel/zen-kernels.nix
+++ b/pkgs/os-specific/linux/kernel/zen-kernels.nix
@@ -84,8 +84,8 @@ let
       SCHED_PDS = yes;
 
       # Swap storage is compressed with LZ4 using zswap
-      ZSWAP_COMPRESSOR_DEFAULT_LZ4 = yes;
-      ZSWAP_COMPRESSOR_DEFAULT = freeform "lz4";
+      ZSWAP_COMPRESSOR_DEFAULT_LZ4  = lib.mkOptionDefault yes;
+      ZSWAP_COMPRESSOR_DEFAULT_ZSTD = lib.mkDefault no;
 
       # Fix error: unused option: XXX.
       CFS_BANDWIDTH = lib.mkForce (option no);