diff --git a/ChangeLog b/ChangeLog
index 885efddcaa..6c69a663fe 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Dec 03 20:00:19 2012  Koichi Sasada  <ko1@atdot.net>
+
+	* vm_exec.c: vm_analysis_insn should be statkc.
+
 Mon Dec  3 19:10:12 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* random.c (Init_Random), rational.c (Init_Rational): make marshal
diff --git a/vm_exec.c b/vm_exec.c
index cdf0fb11bc..45c95c1733 100644
--- a/vm_exec.c
+++ b/vm_exec.c
@@ -11,7 +11,7 @@
 
 #include <math.h>
 
-void vm_analysis_insn(int insn);
+static void vm_analysis_insn(int insn);
 
 #if VMDEBUG > 0
 #define DECL_SC_REG(type, r, reg) register type reg_##r