Spelling fixes

2 files changed, 3 insertions, 3 deletions

diff --git a/src/ChangeLog.10 b/src/ChangeLog.10
index 1b77eaf5803..f6d602b831b 100644
--- a/src/ChangeLog.10
+++ b/src/ChangeLog.10
@@ -2826,7 +2826,7 @@
 2006-07-21  Eli Zaretskii  <eliz@gnu.org>
 
         * w32.c (convert_time): Use explicit long double constants to
-        ensure long double arithmetics is used throughout.
+        ensure long double arithmetic is used throughout.
 
 2006-07-20  YAMAMOTO Mitsuharu  <mituharu@math.s.chiba-u.ac.jp>
 
diff --git a/src/ChangeLog.12 b/src/ChangeLog.12
index 80d7460c734..60f9ea294be 100644
--- a/src/ChangeLog.12
+++ b/src/ChangeLog.12
@@ -2327,7 +2327,7 @@
 
 2012-12-08  Fabrice Popineau  <fabrice.popineau@gmail.com>
 
-        * w32fns.c (emacs_abort): Don't do arithmetics on void pointers.
+        * w32fns.c (emacs_abort): Don't do arithmetic on void pointers.
 
 2012-12-08  Eli Zaretskii  <eliz@gnu.org>
 
@@ -4716,7 +4716,7 @@
         defining an XRectangle structure.
 
         * w32proc.c (RVA_TO_PTR, w32_executable_type): Fix pointer
-        arithmetics for compatibility with x64.
+        arithmetic for compatibility with x64.
 
         * w32menu.c (add_menu_item): Use UINT_PTR instead of UINT, for
         compatibility with x64.