diff --git a/modules/system.nix b/modules/system.nix
index 46964b93..3f581c89 100644
--- a/modules/system.nix
+++ b/modules/system.nix
@@ -30,6 +30,11 @@ in
     };
   };
 
+  zramSwap = {
+    enable = true;
+    memoryPercent = 100;
+  };
+
   time.timeZone = "America/New_York";
 
   i18n.defaultLocale = "ja_JP.UTF-8";
diff --git a/modules/zram.nix b/modules/zram.nix
deleted file mode 100644
index 851c25b3..00000000
--- a/modules/zram.nix
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  zramSwap = {
-    enable = true;
-    memoryPercent = 100;
-  };
-}