diff --git a/configure.ac b/configure.ac
index 0c00231..8035d2f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -562,7 +562,6 @@ if test "x$enable_ipv6" != "xno"; then
     AC_DEFINE(HAVE_IPV6, 1, [Define to enable IPv6 support.])
 
     dnl check for getaddrinfo and freeaddrinfo function presence
-  CFLAGS="$CFLAGS -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/"
     for func in "getaddrinfo" "freeaddrinfo"; do
       AC_MSG_CHECKING([for $func])
       AC_TRY_LINK([#include <netdb.h> ],