diff --git a/configure.ac b/configure.ac
index 0bc0de1bfac..0236dbd89d8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2643,6 +2643,17 @@ AC_CACHE_CHECK([for old but post-boot file],
 	 do
 	   test -f $file && { emacs_cv_boot_time_file=$file; break; }
 	 done])],
+     # This isn't perfect, as some systems might have the page file in
+     # another place.  Also, I suspect that the time stamp of that
+     # file might also change when Windows enlarges the file due to
+     # insufficient VM.  Still, this seems to be the most reliable
+     # way; the alternative (of using GetSystemTimes) won't work on
+     # laptops that hibernate, because the system clock is stopped
+     # then.  Other possibility would be to run "net statistics
+     # workstation" and parse the output, but that's gross.  So this
+     # should do; if the file is not there, the boot time will be
+     # returned as zero, and filelock.c already handles that.
+     [mingw32], [emacs_cv_boot_time_file=C:/pagefile.sys],
      [*], [emacs_cv_boot_time_file=not-needed])])
 
 AS_CASE([$emacs_cv_boot_time_file],
diff --git a/nt/inc/ms-w32.h b/nt/inc/ms-w32.h
index 58be1199345..fce15fcbd8c 100644
--- a/nt/inc/ms-w32.h
+++ b/nt/inc/ms-w32.h
@@ -111,18 +111,6 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 # endif
 #endif
 
-/* This isn't perfect, as some systems might have the page file in
-   another place.  Also, I suspect that the time stamp of that file
-   might also change when Windows enlarges the file due to
-   insufficient VM.  Still, this seems to be the most reliable way;
-   the alternative (of using GetSystemTimes) won't work on laptops
-   that hibernate, because the system clock is stopped then.  Other
-   possibility would be to run "net statistics workstation" and parse
-   the output, but that's gross.  So this should do; if the file is
-   not there, the boot time will be returned as zero, and filelock.c
-   already handles that.  */
-#define BOOT_TIME_FILE "C:/pagefile.sys"
-
 /* ============================================================ */
 
 /* Here, add any special hacks needed to make Emacs work on this