Index: lang/qt/tests/Makefile.in
--- lang/qt/tests/Makefile.in.orig
+++ lang/qt/tests/Makefile.in
@@ -1217,7 +1217,7 @@ AM_LDFLAGS = -no-install
 
 @WANT_QT6_TRUE@ldadd_qt6 = ../../cpp/src/libgpgmepp.la ../src/libqgpgmeqt6.la \
 @WANT_QT6_TRUE@        ../../../src/libgpgme.la @GPGME_QT6_LIBS@ @GPG_ERROR_LIBS@ \
-@WANT_QT6_TRUE@        @GPGME_QT6TEST_LIBS@ @LDADD_FOR_TESTS_KLUDGE@ -lstdc++
+@WANT_QT6_TRUE@        @GPGME_QT6TEST_LIBS@ @LDADD_FOR_TESTS_KLUDGE@
 
 @WANT_QT6_TRUE@cppflags_qt6 = -I$(moc6_dir) -I$(top_srcdir)/lang/qt/src -I$(top_builddir)/lang/cpp/src \
 @WANT_QT6_TRUE@              -I$(top_builddir)/src \
