diff --git a/pkgs/applications/office/gnucash/default.nix b/pkgs/applications/office/gnucash/default.nix
index 9ec13c011683..85868803ec6f 100644
--- a/pkgs/applications/office/gnucash/default.nix
+++ b/pkgs/applications/office/gnucash/default.nix
@@ -43,9 +43,8 @@ stdenv.mkDerivation rec {
 
   propagatedUserEnvPkgs = [ dconf ];
 
-  # glib-2.58 deprecrated g_type_class_add_private
-  # Should probably be removed next version bump
-  CXXFLAGS = [ "-Wno-deprecated-declarations" ];
+  # glib-2.62 deprecations
+  NIX_CFLAGS_COMPILE = [ "-DGLIB_DISABLE_DEPRECATION_WARNINGS" ];
 
   patches = [ ./cmake_check_symbol_exists.patch ];