diff --git a/nix/default.nix b/nix/default.nix
index a4ddc63b..6a703713 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -155,7 +155,7 @@ in
 
       mesonBuildType =
         if debug
-        then "debugoptimized"
+        then "debug"
         else "release";
 
       mesonFlags = flatten [