diff --git a/src/Ending.cpp b/src/Ending.cpp
index 1a6b421b..0e7e8cc8 100644
--- a/src/Ending.cpp
+++ b/src/Ending.cpp
@@ -52,6 +52,9 @@ static CREDIT Credit;
 static STRIP Strip[MAX_STRIP];
 static ILLUSTRATION Illust;
 
+static int GetScriptNumber(const char *text);
+static void ActionCredit_Read(void);
+
 // Update casts
 void ActionStripper(void)
 {
diff --git a/src/Ending.h b/src/Ending.h
index f742f3ad..c8917552 100644
--- a/src/Ending.h
+++ b/src/Ending.h
@@ -17,8 +17,6 @@ void InitCreditScript(void);
 void ReleaseCreditScript(void);
 BOOL StartCreditScript(void);
 void ActionCredit(void);
-void ActionCredit_Read(void);
-int GetScriptNumber(const char *text);
 void SetCreditIllust(int a);
 void CutCreditIllust(void);
 int Scene_DownIsland(HWND hWnd, int mode);
diff --git a/src/Main.cpp b/src/Main.cpp
index c46cd1dc..c26048cb 100644
--- a/src/Main.cpp
+++ b/src/Main.cpp
@@ -23,6 +23,7 @@
 #include "Triangle.h"
 
 LRESULT CALLBACK WindowProcedure(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
+static unsigned long CountFramePerSecound(void);
 
 char gModulePath[MAX_PATH];
 char gDataPath[MAX_PATH];
diff --git a/src/Main.h b/src/Main.h
index 5944bf45..f8c99d72 100644
--- a/src/Main.h
+++ b/src/Main.h
@@ -12,6 +12,5 @@ extern BOOL gbUseJoystick;
 extern int gJoystickButtonTable[8];
 
 void PutFramePerSecound(void);
-unsigned long CountFramePerSecound(void);
 
 BOOL SystemTask(void);