diff --git a/SConstruct b/SConstruct
index 01ad3f32..11e884b5 100644
--- a/SConstruct
+++ b/SConstruct
@@ -1654,10 +1654,16 @@ if test "x$conf_tls" = "xyes"; then
 			AM_CONDITIONAL(HAVE_GNUTLS_PRIORITY_FUNCS, false)
 			HAVE_GNUTLS_PRIORITY_FUNCS=0
 		fi
+	else
+		AM_CONDITIONAL(HAVE_GNUTLS_PRIORITY_FUNCS, false)
+		HAVE_GNUTLS_PRIORITY_FUNCS=0
 	fi
 else
 	AM_CONDITIONAL(VMIME_HAVE_TLS_SUPPORT, false)
 	VMIME_HAVE_TLS_SUPPORT=0
+
+	AM_CONDITIONAL(HAVE_GNUTLS_PRIORITY_FUNCS, false)
+	HAVE_GNUTLS_PRIORITY_FUNCS=0
 fi
 
 AC_SUBST(LIBGNUTLS_CFLAGS)