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-rw-r--r--lib/url.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/url.c b/lib/url.c
index 1f6e5bed9..9112baee0 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -4010,7 +4010,7 @@ static void fix_hostname(struct connectdata *conn, struct hostname *host)
#ifdef USE_LIBIDN2
if(idn2_check_version(IDN2_VERSION)) {
char *ace_hostname = NULL;
-#ifdef IDN2_TRANSITIONAL
+#if IDN2_VERSION_NUMBER >= 0x00140000
int flags = IDN2_NFC_INPUT | IDN2_TRANSITIONAL;
#else
int flags = IDN2_NFC_INPUT;