diff --git a/include/z64ocarina.h b/include/z64ocarina.h
index bcff0a3f22..cc1662fbd7 100644
--- a/include/z64ocarina.h
+++ b/include/z64ocarina.h
@@ -81,7 +81,7 @@ typedef enum {
     /* 13 */ OCARINA_INSTRUMENT_PIANO,
     /* 14 */ OCARINA_INSTRUMENT_BASS_GUITAR,
     /* 15 */ OCARINA_INSTRUMENT_BABY_SINGING,
-    /* 16 */ OCARINA_INSTRUMENT_AMPLIFIED_GUITAR, // Related to (gSaveContext.weekEventReg[0x29] & 0x20)
+    /* 16 */ OCARINA_INSTRUMENT_AMPLIFIED_GUITAR, // Related to (gSaveContext.weekEventReg[41] & 0x20)
 } OcarinaInstrumentId;
 
 typedef enum {
diff --git a/src/overlays/actors/ovl_En_Ma_Yto/z_en_ma_yto.c b/src/overlays/actors/ovl_En_Ma_Yto/z_en_ma_yto.c
index 9fbf4427dd..7ec514801c 100644
--- a/src/overlays/actors/ovl_En_Ma_Yto/z_en_ma_yto.c
+++ b/src/overlays/actors/ovl_En_Ma_Yto/z_en_ma_yto.c
@@ -1464,7 +1464,7 @@ void EnMaYto_Draw(Actor* thisx, GlobalContext* globalCtx) {
     s32 pad;
 
     OPEN_DISPS(globalCtx->state.gfxCtx);
-    if (this->type == MA_YTO_TYPE_BARN && (gSaveContext.weekEventReg[22] & 1)) { // Alieans defeated
+    if (this->type == MA_YTO_TYPE_BARN && (gSaveContext.weekEventReg[22] & 1)) { // Aliens defeated
         gSPMatrix(POLY_OPA_DISP++, Matrix_NewMtx(globalCtx->state.gfxCtx), G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
         gSPDisplayList(POLY_OPA_DISP++, gCremiaWoodenBox);
     }
diff --git a/src/overlays/actors/ovl_En_Osn/z_en_osn.c b/src/overlays/actors/ovl_En_Osn/z_en_osn.c
index 7914d0fed3..fd0e8b6bc2 100644
--- a/src/overlays/actors/ovl_En_Osn/z_en_osn.c
+++ b/src/overlays/actors/ovl_En_Osn/z_en_osn.c
@@ -370,11 +370,11 @@ s32 func_80AD0E10(EnOsn* this, GlobalContext* globalCtx) {
                 return 0x1FCD;
             }
             this->unk_1EA |= 8;
-            if (gSaveContext.weekEventReg[0x4C] & 0x20) {
+            if (gSaveContext.weekEventReg[76] & 0x20) {
                 return 0x1FC8;
             }
 
-            gSaveContext.weekEventReg[0x4C] |= 0x20;
+            gSaveContext.weekEventReg[76] |= 0x20;
             return 0x1FCE;
         }
 
@@ -388,10 +388,10 @@ s32 func_80AD0E10(EnOsn* this, GlobalContext* globalCtx) {
                 return 0x1FCD;
             }
             this->unk_1EA |= 0x10;
-            if (gSaveContext.weekEventReg[0x4C] & 0x40) {
+            if (gSaveContext.weekEventReg[76] & 0x40) {
                 return 0x1FC8;
             }
-            gSaveContext.weekEventReg[0x4C] |= 0x40;
+            gSaveContext.weekEventReg[76] |= 0x40;
             return 0x1FD0;
         }