diff --git a/m4/autotroll.m4 b/m4/autotroll.m4
index 658251b..b5060df 100644
--- a/m4/autotroll.m4
+++ b/m4/autotroll.m4
@@ -267,7 +267,7 @@ AC_DEFUN([AT_WITH_QT],
        dnl (
        darwin*)
          at_darwin=yes
-         at_qmake_args='-spec macx-g++'
+         at_qmake_args='-spec macx-clang'
          ;;
      esac
      AC_MSG_RESULT([$at_darwin])