5 files changed, 10 insertions, 3 deletions
diff --git a/src/debug/start_menu_debug.c b/src/debug/start_menu_debug.c
index f8e10baa2..572251fb4 100644
--- a/src/debug/start_menu_debug.c
+++ b/src/debug/start_menu_debug.c
@@ -1,3 +1,5 @@
+#if DEBUG
+
 __attribute__((naked))
 void debug_sub_8076AC8()
 {
@@ -6128,3 +6130,4 @@ void DebugMenu_OpenKiwa()
     );
 }
 
+#endif
diff --git a/src/engine/link.c b/src/engine/link.c
index a716d5c2b..f800f4aad 100644
--- a/src/engine/link.c
+++ b/src/engine/link.c
@@ -1404,7 +1404,7 @@ static void CB2_PrintErrorMessage(void)
     {
     case 0:
         Menu_PrintTextPixelCoords(gMultiText_LinkError, 20, 56, 1);
-#ifdef DEBUG
+#if DEBUG
         StringCopy(array, sColorCodes);
 
         ConvertIntToHexStringN(array2, sErrorLinkStatus, STR_CONV_MODE_LEADING_ZEROS, 8);
diff --git a/src/engine/save.c b/src/engine/save.c
index 8217652f9..d11eebaac 100644
--- a/src/engine/save.c
+++ b/src/engine/save.c
@@ -783,7 +783,7 @@ u8 Save_WriteDataInternal(u8 saveType)
     return 0;
 }
 
-#ifdef DEBUG
+#if DEBUG
 extern u32 gUnknown_Debug_03004BD0;
 #endif
 
@@ -794,7 +794,7 @@ u8 Save_WriteData(u8 saveType) // TrySave
 
     Save_WriteDataInternal(saveType);
     if (!gDamagedSaveSectors
-#ifdef DEBUG
+#if DEBUG
         && gUnknown_Debug_03004BD0 == 0
 #endif
         )
diff --git a/src/pokemon/mail.c b/src/pokemon/mail.c
index db0c96938..3187fef9f 100644
--- a/src/pokemon/mail.c
+++ b/src/pokemon/mail.c
@@ -327,9 +327,11 @@ static void sub_80F8F58(void);
 static void sub_80F8F78(void);
 static void sub_80F8FB4(void);
 
+#if DEBUG
 // some debug variable, I guess.
 // TODO: where exactly is this located?
 __attribute__((section(".bss"))) /*static*/ u8 gUnknown_0300074C = 0;
+#endif
 
 #if DEBUG
 __attribute__((naked))
diff --git a/src/scene/title_screen.c b/src/scene/title_screen.c
index 4ff02d93c..a1c8e081d 100644
--- a/src/scene/title_screen.c
+++ b/src/scene/title_screen.c
@@ -354,7 +354,9 @@ static void Task_TitleScreenPhase1(u8);
 static void Task_TitleScreenPhase2(u8);
 static void Task_TitleScreenPhase3(u8);
 static void CB2_GoToMainMenu(void);
+#if DEBUG
 static void CB2_GoToTestMenu(void);
+#endif
 static void CB2_GoToClearSaveDataScreen(void);
 static void CB2_GoToResetRtcScreen(void);
 static void CB2_GoToCopyrightScreen(void);