diff --git a/src/ChangeLog b/src/ChangeLog
index e07e900b27d..2deeb61b95c 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2014-04-13  Eli Zaretskii  <eliz@gnu.org>
+
+	* puresize.h (BASE_PURESIZE): Bump by 1K.  (Bug#17255)
+
 2014-04-13  Stefan Monnier  <monnier@iro.umontreal.ca>
 
 	* bytecode.c (exec_byte_code): Rework the volatiles.  Most importantly,
diff --git a/src/puresize.h b/src/puresize.h
index 0ee29d803b4..1371fb3cea2 100644
--- a/src/puresize.h
+++ b/src/puresize.h
@@ -40,7 +40,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #endif
 
 #ifndef BASE_PURESIZE
-#define BASE_PURESIZE (1700000 + SYSTEM_PURESIZE_EXTRA + SITELOAD_PURESIZE_EXTRA)
+#define BASE_PURESIZE (1701000 + SYSTEM_PURESIZE_EXTRA + SITELOAD_PURESIZE_EXTRA)
 #endif
 
 /* Increase BASE_PURESIZE by a ratio depending on the machine's word size.  */