diff --git a/ChangeLog b/ChangeLog
index 2b33091503..a7748f8427 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Jun  9 00:04:25 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* configure.in (posix_fadvise): disable use of posix_fadvise
+	  itself on 32-bit AIX.  [ruby-core:62968] [Bug #9914]
+
 Sun Jun  8 23:28:00 2014    <kanemoto@ruby-lang.org>
 
 	* io.c (rb_io_advise): AIX currently does not support a 32-bit call to
diff --git a/configure.in b/configure.in
index cfd9065514..8b7f95dad3 100644
--- a/configure.in
+++ b/configure.in
@@ -1200,7 +1200,18 @@ mv confdefs.h largefile.h
 mv confdefs1.h confdefs.h
 cat largefile.h >> confdefs.h
 
-AS_CASE(["$target_os"],[mingw*], [ac_cv_type_off_t=yes;ac_cv_sizeof_off_t=8])
+AS_CASE(["$target_os"],
+    [mingw*], [ac_cv_type_off_t=yes;ac_cv_sizeof_off_t=8],
+    [aix*], [
+    AS_CASE(["$target_cpu:$ac_cv_sys_large_files"],
+	[ppc64:*|powerpc64:*], [],
+	[*:no|*:unknown], []
+	[
+	    # AIX currently does not support a 32-bit call to posix_fadvise()
+	    # if _LARGE_FILES is defined.
+	    ac_cv_posix_fadvise=no
+	])
+    ])
 
 AC_C_BIGENDIAN
 AC_C_CONST
diff --git a/io.c b/io.c
index 81067126d0..9900118818 100644
--- a/io.c
+++ b/io.c
@@ -8591,10 +8591,7 @@ rb_io_advise(int argc, VALUE *argv, VALUE io)
     off = NIL_P(offset) ? 0 : NUM2OFFT(offset);
     l   = NIL_P(len)    ? 0 : NUM2OFFT(len);
 
-    /* AIX currently does not support a 32-bit call to posix_fadvise()
-     * if _LARGE_FILES is defined.
-     */
-#if defined(HAVE_POSIX_FADVISE) && !(defined(_AIX) && defined(_LARGE_FILES) && !defined(_ARCH_PPC64))
+#ifdef HAVE_POSIX_FADVISE
     return do_io_advise(fptr, advice, off, l);
 #else
     ((void)off, (void)l);	/* Ignore all hint */