diff --git a/pkgs/applications/misc/qcad/default.nix b/pkgs/applications/misc/qcad/default.nix
index c733cb608388..e67a96fe7cd3 100644
--- a/pkgs/applications/misc/qcad/default.nix
+++ b/pkgs/applications/misc/qcad/default.nix
@@ -65,6 +65,7 @@ mkDerivation rec {
     "MUPARSER_DIR=${muparser}"
     "INSTALLROOT=$(out)"
     "BOOST_DIR=${boost.dev}"
+    "QMAKE_CXXFLAGS=-std=c++14"
   ];
 
   qtWrapperArgs = lib.optionals stdenv.isLinux [