diff --git a/pkgs/by-name/os/oshu/package.nix b/pkgs/by-name/os/oshu/package.nix
index 0cd6b1d99a36..23446d5ea138 100644
--- a/pkgs/by-name/os/oshu/package.nix
+++ b/pkgs/by-name/os/oshu/package.nix
@@ -42,7 +42,6 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   cmakeFlag = [
-    "-DCMAKE_BUILD_TYPE=Release"
     "-DOSHU_DEFAULT_SKIN=minimal"
   ];