diff --git a/config/opts.nix b/config/opts.nix
index 4ceb43c..d9972ef 100644
--- a/config/opts.nix
+++ b/config/opts.nix
@@ -12,6 +12,7 @@
     smartcase = true;
     ignorecase = true;
     termguicolors = true;
+    expandtab = false;
     gdefault = true;
     cursorlineopt = "both";
   };