diff --git a/configure b/configure
index 6d3b3c2ce5..415c731db2 100755
--- a/configure
+++ b/configure
@@ -788,7 +788,6 @@ ISC_PLATFORM_HAVEKQUEUE
 ISC_PLATFORM_HAVELIFCONF
 ISC_PLATFORM_NORETURN_POST
 ISC_PLATFORM_NORETURN_PRE
-ISC_PLATFORM_HAVELONGLONG
 ISC_SOCKADDR_LEN_T
 expanded_sysconfdir
 PYTHON_INSTALL_LIB
@@ -13976,30 +13975,6 @@ $as_echo "#define TIME_WITH_SYS_TIME 1" >>confdefs.h
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for long long" >&5
-$as_echo_n "checking for long long... " >&6; }
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-long long i = 0; return (0);
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-		ISC_PLATFORM_HAVELONGLONG="#define ISC_PLATFORM_HAVELONGLONG 1"
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-		ISC_PLATFORM_HAVELONGLONG="#undef ISC_PLATFORM_HAVELONGLONG"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
 
 #
 # check for uname library routine
diff --git a/configure.in b/configure.in
index be9a178edc..bc22b893dc 100644
--- a/configure.in
+++ b/configure.in
@@ -518,13 +518,6 @@ int getsockname(int, struct sockaddr *, size_t *);
 ])
 AC_SUBST(ISC_SOCKADDR_LEN_T)
 AC_HEADER_TIME
-AC_MSG_CHECKING(for long long)
-AC_TRY_COMPILE([],[long long i = 0; return (0);],
-	[AC_MSG_RESULT(yes)
-		ISC_PLATFORM_HAVELONGLONG="#define ISC_PLATFORM_HAVELONGLONG 1"],
-	[AC_MSG_RESULT(no)
-		ISC_PLATFORM_HAVELONGLONG="#undef ISC_PLATFORM_HAVELONGLONG"])
-AC_SUBST(ISC_PLATFORM_HAVELONGLONG)
 
 #
 # check for uname library routine
diff --git a/lib/isc/include/isc/platform.h.in b/lib/isc/include/isc/platform.h.in
index a2d3a37a03..977364722b 100644
--- a/lib/isc/include/isc/platform.h.in
+++ b/lib/isc/include/isc/platform.h.in
@@ -129,11 +129,6 @@
  */
 @ISC_PLATFORM_HAVESTATNSEC@
 
-/*
- * Define if your compiler supports "long long int".
- */
-@ISC_PLATFORM_HAVELONGLONG@
-
 /*
  * Used to control how extern data is linked; needed for Win32 platforms.
  */