diff --git a/configure.ac b/configure.ac
index b8a60e2c..9227f318 100644
--- a/configure.ac
+++ b/configure.ac
@@ -357,8 +357,6 @@ dnl We expect to have these functions on Unix-like systems configure
 dnl runs on.  The defines are provided to get them in config.h.in so
 dnl Wget can still be ported to non-Unix systems (such as Windows)
 dnl that lack some of these functions.
-AC_DEFINE([HAVE_STRCASECMP], 1, [Define to 1 if you have the `strcasecmp' function.])
-AC_DEFINE([HAVE_STRNCASECMP], 1, [Define to 1 if you have the `strncasecmp' function.])
 AC_DEFINE([HAVE_STRDUP], 1, [Define to 1 if you have the `strdup' function.])
 AC_DEFINE([HAVE_ISATTY], 1, [Define to 1 if you have the `isatty' function.])
 
diff --git a/src/mswindows.h b/src/mswindows.h
index 5012232f..a8f9ba05 100644
--- a/src/mswindows.h
+++ b/src/mswindows.h
@@ -59,14 +59,6 @@ as that of the covered work.  */
 /* Declares inet_ntop() and inet_pton(). */
 #include <arpa/inet.h>
 
-/* We have strcasecmp and strncasecmp, just under different names.  */
-#ifndef HAVE_STRCASECMP
-# define strcasecmp stricmp
-#endif
-#ifndef HAVE_STRNCASECMP
-# define strncasecmp strnicmp
-#endif
-
 #include <stdio.h>
 
 #define PATH_SEPARATOR '\\'