diff --git a/include/global.fieldmap.h b/include/global.fieldmap.h
index 6e262dc9c..94127c554 100644
--- a/include/global.fieldmap.h
+++ b/include/global.fieldmap.h
@@ -164,7 +164,7 @@ struct MapHeader
 {
     /* 0x00 */ const struct MapData *mapData;
     /* 0x04 */ const struct MapEvents *events;
-    /* 0x08 */ u8 *mapScripts;
+    /* 0x08 */ const u8 *mapScripts;
     /* 0x0C */ const struct MapConnections *connections;
     /* 0x10 */ u16 music;
     /* 0x12 */ u16 mapDataId;
diff --git a/src/overworld.c b/src/overworld.c
index fd1173ffc..6ee338cb8 100644
--- a/src/overworld.c
+++ b/src/overworld.c
@@ -605,15 +605,16 @@ bool32 warp_data_is_not_neg_1(struct WarpData *warp)
 {
     if (warp->mapGroup != -1)
         return FALSE;
-    if (warp->mapNum != -1)
+    else if (warp->mapNum != -1)
         return FALSE;
-    if (warp->warpId != -1)
+    else if (warp->warpId != -1)
         return FALSE;
-    if (warp->x != -1)
+    else if (warp->x != -1)
         return FALSE;
-    if (warp->y != -1)
+    else if (warp->y != -1)
         return FALSE;
-    return TRUE;
+    else
+        return TRUE;
 }
 
 const struct MapHeader *Overworld_GetMapHeaderByGroupAndId(u16 mapGroup, u16 mapNum)
@@ -2125,7 +2126,7 @@ static void map_loading_lcd_reset(void)
     SetGpuReg(REG_OFFSET_WIN1V, 0xFFFF);
     SetGpuReg(REG_OFFSET_BLDCNT, gUnknown_82EC7C4[1] | gUnknown_82EC7C4[2] | gUnknown_82EC7C4[3]
                                | BLDCNT_TGT2_OBJ | BLDCNT_EFFECT_BLEND);
-    SetGpuReg(REG_OFFSET_BLDALPHA, 0x70D);
+    SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(13, 7));
     overworld_bg_setup();
     schedule_bg_copy_tilemap_to_vram(1);
     schedule_bg_copy_tilemap_to_vram(2);
diff --git a/src/script.c b/src/script.c
index 5a1c5daa9..8c868128b 100644
--- a/src/script.c
+++ b/src/script.c
@@ -243,7 +243,7 @@ void ScriptContext2_RunNewScript(const u8 *ptr)
 
 u8 *mapheader_get_tagged_pointer(u8 tag)
 {
-    u8 *mapScripts = gMapHeader.mapScripts;
+    const u8 *mapScripts = gMapHeader.mapScripts;
 
     if (!mapScripts)
         return NULL;