diff --git a/include/JSystem/JAudio/JAIBankWave.h b/include/JSystem/JAudio/JAIBankWave.h
index 941ec92d5..e79b170a0 100644
--- a/include/JSystem/JAudio/JAIBankWave.h
+++ b/include/JSystem/JAudio/JAIBankWave.h
@@ -15,7 +15,7 @@ namespace JAInter {
         void loadSceneWave(s32, s32);
         void loadGroupWave(s32, s32);
         void getWaveLoadStatus(s32);
-        void checkAllWaveLoadStatus();
+        bool checkAllWaveLoadStatus();
 
         extern s32* wsGroupNumber;
         extern s32* wsLoadStatus;
diff --git a/src/JSystem/JAudio/JAIBankWave.cpp b/src/JSystem/JAudio/JAIBankWave.cpp
index a005c8d99..fe43cb0f2 100644
--- a/src/JSystem/JAudio/JAIBankWave.cpp
+++ b/src/JSystem/JAudio/JAIBankWave.cpp
@@ -70,6 +70,6 @@ void JAInter::BankWave::getWaveLoadStatus(s32) {
 }
 
 /* 802916C0-80291704       .text checkAllWaveLoadStatus__Q27JAInter8BankWaveFv */
-void JAInter::BankWave::checkAllWaveLoadStatus() {
+bool JAInter::BankWave::checkAllWaveLoadStatus() {
     /* Nonmatching */
 }
diff --git a/src/d/d_s_title.cpp b/src/d/d_s_title.cpp
index 7e3169b6f..f22f6e026 100644
--- a/src/d/d_s_title.cpp
+++ b/src/d/d_s_title.cpp
@@ -3,6 +3,7 @@
 // Translation Unit: d_s_title.cpp
 //
 
+#include "JSystem/JAudio/JAIBankWave.h"
 #include "f_op/f_op_scene.h"
 #include "f_op/f_op_draw_iter.h"
 #include "f_op/f_op_actor_mng.h"
@@ -17,13 +18,6 @@
 #include "m_Do/m_Do_controller_pad.h"
 #include "d/actor/d_a_movie_player.h"
 
-namespace JAInter {
-    class BankWave {
-    public:
-        static bool checkAllWaveLoadStatus();
-    };
-};
-
 #if VERSION == VERSION_PAL
     #define title_of_scene_class dScnTitle_c
 #endif