diff --git a/pkgs/applications/gis/qgis/unwrapped-ltr.nix b/pkgs/applications/gis/qgis/unwrapped-ltr.nix
index 1e12b435c78a..17af854eabda 100644
--- a/pkgs/applications/gis/qgis/unwrapped-ltr.nix
+++ b/pkgs/applications/gis/qgis/unwrapped-ltr.nix
@@ -151,7 +151,6 @@ in mkDerivation rec {
   env.QT_QPA_PLATFORM_PLUGIN_PATH="${qtbase}/${qtbase.qtPluginPrefix}/platforms";
 
   cmakeFlags = [
-    "-DCMAKE_BUILD_TYPE=Release"
     "-DWITH_3D=True"
     "-DWITH_PDAL=True"
     "-DENABLE_TESTS=False"