diff --git a/CMake/Platforms/WindowsCache.cmake b/CMake/Platforms/WindowsCache.cmake
index 44a1fc9699..6a8756623f 100644
--- a/CMake/Platforms/WindowsCache.cmake
+++ b/CMake/Platforms/WindowsCache.cmake
@@ -53,7 +53,6 @@ if(NOT UNIX)
     set(HAVE_LIBZ 0)
 
     set(HAVE_ARPA_INET_H 0)
-    set(HAVE_ARPA_TFTP_H 0)
     set(HAVE_FCNTL_H 1)
     set(HAVE_IFADDRS_H 0)
     set(HAVE_IO_H 1)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1a2e08d7fd..45838483c5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1035,7 +1035,6 @@ check_include_file_concat("sys/un.h"         HAVE_SYS_UN_H)
 check_include_file_concat("sys/utime.h"      HAVE_SYS_UTIME_H)
 check_include_file_concat("sys/xattr.h"      HAVE_SYS_XATTR_H)
 check_include_file_concat("arpa/inet.h"      HAVE_ARPA_INET_H)
-check_include_file_concat("arpa/tftp.h"      HAVE_ARPA_TFTP_H)
 check_include_file_concat("fcntl.h"          HAVE_FCNTL_H)
 check_include_file_concat("idn2.h"           HAVE_IDN2_H)
 check_include_file_concat("ifaddrs.h"        HAVE_IFADDRS_H)
diff --git a/configure.ac b/configure.ac
index 15fbda12ad..a2c8e2ee3a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3443,7 +3443,6 @@ AC_CHECK_HEADERS(
         libgen.h \
         locale.h \
         stdbool.h \
-        arpa/tftp.h \
         sys/filio.h \
         sys/wait.h \
         setjmp.h,
diff --git a/lib/curl_config.h.cmake b/lib/curl_config.h.cmake
index 65901a2b1d..328a77d733 100644
--- a/lib/curl_config.h.cmake
+++ b/lib/curl_config.h.cmake
@@ -162,9 +162,6 @@
 /* Define to 1 if you have the <arpa/inet.h> header file. */
 #cmakedefine HAVE_ARPA_INET_H 1
 
-/* Define to 1 if you have the <arpa/tftp.h> header file. */
-#cmakedefine HAVE_ARPA_TFTP_H 1
-
 /* Define to 1 if you have _Atomic support. */
 #cmakedefine HAVE_ATOMIC 1
 
diff --git a/tests/server/tftpd.c b/tests/server/tftpd.c
index 8bcd452d04..8db82ff233 100644
--- a/tests/server/tftpd.c
+++ b/tests/server/tftpd.c
@@ -67,11 +67,6 @@
 #ifdef HAVE_ARPA_INET_H
 #include <arpa/inet.h>
 #endif
-#ifdef HAVE_ARPA_TFTP_H
-#include <arpa/tftp.h>
-#else
-#include "tftp.h"
-#endif
 #ifdef HAVE_NETDB_H
 #include <netdb.h>
 #endif
@@ -97,6 +92,7 @@
 #include "getpart.h"
 #include "util.h"
 #include "server_sockaddr.h"
+#include "tftp.h"
 
 /* include memdebug.h last */
 #include "memdebug.h"