diff --git a/ChangeLog b/ChangeLog
index f2f7247e40..4dacdaa33f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Jun 25 09:45:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* eval_error.ci, eval_jump.ci, eval_method.ci, eval_safe.ci: c-mode.
+
 Mon Jun 25 05:27:54 2007  Koichi Sasada  <ko1@atdot.net>
 
 	* eval.c: remove ruby_current_node and change eval() prototype.
diff --git a/eval_error.ci b/eval_error.ci
index d719953f2d..07302bf374 100644
--- a/eval_error.ci
+++ b/eval_error.ci
@@ -1,3 +1,4 @@
+/* -*-c-*- */
 /*
  * included by eval.c
  */
diff --git a/eval_jump.ci b/eval_jump.ci
index b929136afd..6d1e730d0f 100644
--- a/eval_jump.ci
+++ b/eval_jump.ci
@@ -1,3 +1,4 @@
+/* -*-c-*- */
 /*
  * from eval.c
  */
diff --git a/eval_method.ci b/eval_method.ci
index 1f4ba33d2f..f91e89c034 100644
--- a/eval_method.ci
+++ b/eval_method.ci
@@ -1,3 +1,4 @@
+/* -*-c-*- */
 /*
  * This file is included by eval.c
  */
diff --git a/eval_safe.ci b/eval_safe.ci
index 2c8d8de328..7d0a077880 100644
--- a/eval_safe.ci
+++ b/eval_safe.ci
@@ -1,3 +1,4 @@
+/* -*-c-*- */
 /*
  * This file is included by eval.c
  */