diff --git a/lib/url.c b/lib/url.c
index c90a1c5cbd..b997f419b4 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -67,8 +67,6 @@
 bool curl_win32_idn_to_ascii(const char *in, char **out);
 #endif  /* USE_LIBIDN2 */
 
-#include <idn2.h>
-
 #include "urldata.h"
 #include "netrc.h"