diff --git a/src/shared/engine_types.h b/src/shared/engine_types.h
index fe1b354a25..427227603e 100644
--- a/src/shared/engine_types.h
+++ b/src/shared/engine_types.h
@@ -1881,25 +1881,15 @@ typedef Quad_801EA880_8017D900 Quad_801EA880;
 typedef Quad_801EA880_8017D900 Quad_801EA880_8017FD9C;
 typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027;
 typedef struct { Rec027 r[9]; } Blk027;
-typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027_8017BFEC;
 typedef Blk027 Blk027_8017BFEC;
-typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027_8017C2B0;
 typedef Blk027 Blk027_8017C2B0;
-typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027_8017C3C4;
 typedef Blk027 Blk027_8017C3C4;
-typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027_8017C688;
 typedef Blk027 Blk027_8017C688;
-typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027_8017CBB0;
 typedef Blk027 Blk027_8017CBB0;
-typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027_8017CECC;
 typedef Blk027 Blk027_8017CECC;
-typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027_8017D1E8;
 typedef Blk027 Blk027_8017D1E8;
-typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027_8017D3AC;
 typedef Blk027 Blk027_8017D3AC;
-typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027_8017DA90;
 typedef Blk027 Blk027_8017DA90;
-typedef struct { u16 f0; s16 f2; u16 f4; u16 f6; u16 f8; u16 fA; } Rec027_80181304;
 typedef Blk027 Blk027_80181304;
 typedef Rec20 Rec20_8017DF18;
 typedef Rec20 Rec20_8017DF18_8017DEF0;
@@ -2658,8 +2648,8 @@ typedef struct { u8 b[4]; } Blk4_8018CC28;
 typedef struct { u8 d[4]; } Blk4_8018FF98;
 typedef struct { u8 b[4]; } Blk4_80191320_80191070;
 typedef Blk4_80191320_80191070 Blk4_8018FF98_8018FCE8;
-typedef struct { u8 b[4]; } Blk4_80191320;
-typedef struct { u8 b[4]; } Blk4_80191320_8018D05C;
+typedef Blk4_8018FF98 Blk4_80191320;
+typedef Blk4_8018FF98 Blk4_80191320_8018D05C;
 typedef struct { u8 d[4]; } Blk4_801EC660;
 typedef struct { u8 b[4]; } __attribute__((packed, aligned(1))) Blk4_9B4;
 typedef Blk4_8018048C Blk4_fc;
@@ -4656,7 +4646,7 @@ typedef struct {
     u8 pad_D8[0x10];
     s32 f_E8;
 } MainStruct_SC02_005_8017CF90;
-typedef struct Obj8017EBC4 {
+typedef struct {
     /* 0x000 */ u8 pad000[0x02];
     /* 0x002 */ s16 unk_002;
     /* 0x004 */ u8 pad004[0x06];