diff --git a/glib/tests/regex.c b/glib/tests/regex.c
index 60ab2f9df..1a37177b3 100644
--- a/glib/tests/regex.c
+++ b/glib/tests/regex.c
@@ -2675,7 +2675,7 @@ main (int argc, char *argv[])
   TEST_EXPAND("a", "a", "\\0130", FALSE, "X");
   TEST_EXPAND("a", "a", "\\\\\\0", FALSE, "\\a");
   TEST_EXPAND("a(?P<G>.)c", "xabcy", "X\\g<G>X", FALSE, "XbX");
-#ifndef USE_SYSTEM_PCRE
+#if !(PCRE_MAJOR > 8 || (PCRE_MAJOR == 8 && PCRE_MINOR >= 34))
   /* PCRE >= 8.34 no longer allows this usage. */
   TEST_EXPAND("(.)(?P<1>.)", "ab", "\\1", FALSE, "a");
   TEST_EXPAND("(.)(?P<1>.)", "ab", "\\g<1>", FALSE, "a");