diff --git a/config.h.in b/config.h.in
index 8f783f83499..17a1624cb37 100644
--- a/config.h.in
+++ b/config.h.in
@@ -25,9 +25,6 @@
    tzname.  */
 #undef HAVE_TZNAME
 
-/* Define as __inline if that's what the C compiler calls it.  */
-#undef inline
-
 /* Define if on MINIX.  */
 #undef _MINIX
 
diff --git a/configure.in b/configure.in
index 8bfb14788c6..a6f488dff38 100644
--- a/configure.in
+++ b/configure.in
@@ -1007,7 +1007,6 @@ AC_MSG_RESULT($was_it_defined)
 
 AC_C_CHAR_UNSIGNED
 AC_C_CONST
-AC_C_INLINE
 
 works=no
 AC_MSG_CHECKING(for working volatile)