diff --git a/src/game/bondbike.c b/src/game/bondbike.c
index 9d141c6c4..194d4780e 100644
--- a/src/game/bondbike.c
+++ b/src/game/bondbike.c
@@ -1698,7 +1698,7 @@ void bbikeTick(void)
 	mtx4LoadYRotation(hoverpropGetTurnAngle(obj), &spe4);
 	func0f097044(&spe4, spd4);
 	func0f097044(&sp124, spc4);
-	func0f0976c0(spc4, spd4);
+	quaternion0f0976c0(spc4, spd4);
 	func0f0972b8(spd4, spc4, 0.8f, spb4);
 	quaternionToMtx(spb4, &sp124);
 	mtx4MultMtx4InPlace(&sp124, &sp164);
@@ -1729,7 +1729,7 @@ void bbikeTick(void)
 
 		func0f097044(&g_Vars.currentplayer->bondentermtx, spa4);
 		func0f097044(&sp164, sp94);
-		func0f0976c0(sp94, spa4);
+		quaternion0f0976c0(sp94, spa4);
 		func0f0972b8(spa4, sp94, 1.0f - g_Vars.currentplayer->bondentert2, sp84);
 		quaternionToMtx(sp84, &sp164);
 	}
diff --git a/src/game/bondgun.c b/src/game/bondgun.c
index ab993b53b..01914fc4d 100644
--- a/src/game/bondgun.c
+++ b/src/game/bondgun.c
@@ -11361,7 +11361,7 @@ glabel var7f1ac72c
 /*  f09f4ac:	0fc25c11 */ 	jal	func0f097044
 /*  f09f4b0:	27a50058 */ 	addiu	$a1,$sp,0x58
 /*  f09f4b4:	27a40068 */ 	addiu	$a0,$sp,0x68
-/*  f09f4b8:	0fc25db0 */ 	jal	func0f0976c0
+/*  f09f4b8:	0fc25db0 */ 	jal	quaternion0f0976c0
 /*  f09f4bc:	27a50058 */ 	addiu	$a1,$sp,0x58
 /*  f09f4c0:	3c017f1b */ 	lui	$at,%hi(var7f1ac720)
 /*  f09f4c4:	c430c71c */ 	lwc1	$f16,%lo(var7f1ac71c)($at)
@@ -11877,7 +11877,7 @@ glabel var7f1ac72c
 /*  f09f4ac:	0fc25c11 */ 	jal	func0f097044
 /*  f09f4b0:	27a50058 */ 	addiu	$a1,$sp,0x58
 /*  f09f4b4:	27a40068 */ 	addiu	$a0,$sp,0x68
-/*  f09f4b8:	0fc25db0 */ 	jal	func0f0976c0
+/*  f09f4b8:	0fc25db0 */ 	jal	quaternion0f0976c0
 /*  f09f4bc:	27a50058 */ 	addiu	$a1,$sp,0x58
 /*  f09f4c0:	3c017f1b */ 	lui	$at,%hi(var7f1ac720)
 /*  f09f4c4:	c430c71c */ 	lwc1	$f16,%lo(var7f1ac71c)($at)
@@ -12403,7 +12403,7 @@ glabel var7f1ac740
 /*  f0a006c:	0fc25bd9 */ 	jal	func0f097044
 /*  f0a0070:	27a40134 */ 	addiu	$a0,$sp,0x134
 /*  f0a0074:	27a400e4 */ 	addiu	$a0,$sp,0xe4
-/*  f0a0078:	0fc25d78 */ 	jal	func0f0976c0
+/*  f0a0078:	0fc25d78 */ 	jal	quaternion0f0976c0
 /*  f0a007c:	02002825 */ 	move	$a1,$s0
 /*  f0a0080:	3c017f1b */ 	lui	$at,0x7f1b
 /*  f0a0084:	c432d93c */ 	lwc1	$f18,-0x26c4($at)
@@ -13038,7 +13038,7 @@ glabel var7f1ac740
 /*  f09fd68:	0fc25c11 */ 	jal	func0f097044
 /*  f09fd6c:	27a40134 */ 	addiu	$a0,$sp,0x134
 /*  f09fd70:	27a400e4 */ 	addiu	$a0,$sp,0xe4
-/*  f09fd74:	0fc25db0 */ 	jal	func0f0976c0
+/*  f09fd74:	0fc25db0 */ 	jal	quaternion0f0976c0
 /*  f09fd78:	02002825 */ 	or	$a1,$s0,$zero
 /*  f09fd7c:	3c017f1b */ 	lui	$at,%hi(var7f1ac73c)
 /*  f09fd80:	c432c73c */ 	lwc1	$f18,%lo(var7f1ac73c)($at)
@@ -13664,7 +13664,7 @@ glabel var7f1ac740
 /*  f09dbdc:	0fc253f5 */ 	jal	func0f097044
 /*  f09dbe0:	27a40134 */ 	addiu	$a0,$sp,0x134
 /*  f09dbe4:	27a400e4 */ 	addiu	$a0,$sp,0xe4
-/*  f09dbe8:	0fc25594 */ 	jal	func0f0976c0
+/*  f09dbe8:	0fc25594 */ 	jal	quaternion0f0976c0
 /*  f09dbec:	02002825 */ 	or	$a1,$s0,$zero
 /*  f09dbf0:	3c017f1a */ 	lui	$at,0x7f1a
 /*  f09dbf4:	c4326a84 */ 	lwc1	$f18,0x6a84($at)
diff --git a/src/game/bondmove.c b/src/game/bondmove.c
index 52d461cff..176728812 100644
--- a/src/game/bondmove.c
+++ b/src/game/bondmove.c
@@ -2106,7 +2106,7 @@ void bmoveUpdateHead(f32 arg0, f32 arg1, f32 arg2, Mtxf *arg3, f32 arg4)
 	if (arg3) {
 		func0f097044(&sp180, sp100);
 		func0f097044(arg3, sp84);
-		func0f0976c0(sp100, sp84);
+		quaternion0f0976c0(sp100, sp84);
 		func0f0972b8(sp100, sp84, arg4, sp68);
 		quaternionToMtx(sp68, &sp180);
 	}
diff --git a/src/game/game_096ca0.c b/src/game/game_096ca0.c
index cd46d9e71..c942d53e2 100644
--- a/src/game/game_096ca0.c
+++ b/src/game/game_096ca0.c
@@ -528,40 +528,17 @@ glabel func0f097518
 /*  f0976bc:	00000000 */ 	nop
 );
 
-GLOBAL_ASM(
-glabel func0f0976c0
-/*  f0976c0:	c4ac0000 */ 	lwc1	$f12,0x0($a1)
-/*  f0976c4:	c4840000 */ 	lwc1	$f4,0x0($a0)
-/*  f0976c8:	c4ae0004 */ 	lwc1	$f14,0x4($a1)
-/*  f0976cc:	c4880004 */ 	lwc1	$f8,0x4($a0)
-/*  f0976d0:	460c2182 */ 	mul.s	$f6,$f4,$f12
-/*  f0976d4:	c4840008 */ 	lwc1	$f4,0x8($a0)
-/*  f0976d8:	c4b00008 */ 	lwc1	$f16,0x8($a1)
-/*  f0976dc:	460e4282 */ 	mul.s	$f10,$f8,$f14
-/*  f0976e0:	c4a2000c */ 	lwc1	$f2,0xc($a1)
-/*  f0976e4:	46102202 */ 	mul.s	$f8,$f4,$f16
-/*  f0976e8:	460a3480 */ 	add.s	$f18,$f6,$f10
-/*  f0976ec:	c48a000c */ 	lwc1	$f10,0xc($a0)
-/*  f0976f0:	460a1102 */ 	mul.s	$f4,$f2,$f10
-/*  f0976f4:	46089180 */ 	add.s	$f6,$f18,$f8
-/*  f0976f8:	44809000 */ 	mtc1	$zero,$f18
-/*  f0976fc:	46062000 */ 	add.s	$f0,$f4,$f6
-/*  f097700:	4612003c */ 	c.lt.s	$f0,$f18
-/*  f097704:	00000000 */ 	nop
-/*  f097708:	45000009 */ 	bc1f	.L0f097730
-/*  f09770c:	00000000 */ 	nop
-/*  f097710:	46006207 */ 	neg.s	$f8,$f12
-/*  f097714:	46007287 */ 	neg.s	$f10,$f14
-/*  f097718:	46008107 */ 	neg.s	$f4,$f16
-/*  f09771c:	46001187 */ 	neg.s	$f6,$f2
-/*  f097720:	e4a80000 */ 	swc1	$f8,0x0($a1)
-/*  f097724:	e4aa0004 */ 	swc1	$f10,0x4($a1)
-/*  f097728:	e4a40008 */ 	swc1	$f4,0x8($a1)
-/*  f09772c:	e4a6000c */ 	swc1	$f6,0xc($a1)
-.L0f097730:
-/*  f097730:	03e00008 */ 	jr	$ra
-/*  f097734:	00000000 */ 	nop
-);
+void quaternion0f0976c0(f32 q1[4], f32 q2[4])
+{
+	f32 dot = q1[0] * q2[0] + q1[1] * q2[1] + q1[2] * q2[2] + q1[3] * q2[3];
+
+	if (dot < 0.0f) {
+		q2[0] = -q2[0];
+		q2[1] = -q2[1];
+		q2[2] = -q2[2];
+		q2[3] = -q2[3];
+	}
+}
 
 GLOBAL_ASM(
 glabel func0f097738
diff --git a/src/game/player.c b/src/game/player.c
index eab0f6710..81a11afde 100644
--- a/src/game/player.c
+++ b/src/game/player.c
@@ -2209,7 +2209,7 @@ void playerTickCutscene(bool arg0)
 				g_Vars.bond->bond2.unk28.x, g_Vars.bond->bond2.unk28.y, g_Vars.bond->bond2.unk28.z);
 		func0f097044(&spc4, sp74);
 		func0f097044(&sp84, sp64);
-		func0f0976c0(sp64, sp74);
+		quaternion0f0976c0(sp64, sp74);
 		func0f0972b8(sp74, sp64, sp104, sp54);
 		quaternionToMtx(sp54, &sp11c);
 
diff --git a/src/game/propobj.c b/src/game/propobj.c
index 752003304..4c547648f 100644
--- a/src/game/propobj.c
+++ b/src/game/propobj.c
@@ -11394,7 +11394,7 @@ glabel var7f1aa298
 /*  f06e654:	0fc25b28 */ 	jal	quaternion0f096ca0
 /*  f06e658:	afa50024 */ 	sw	$a1,0x24($sp)
 /*  f06e65c:	8fa50024 */ 	lw	$a1,0x24($sp)
-/*  f06e660:	0fc25db0 */ 	jal	func0f0976c0
+/*  f06e660:	0fc25db0 */ 	jal	quaternion0f0976c0
 /*  f06e664:	8fa40038 */ 	lw	$a0,0x38($sp)
 /*  f06e668:	44809000 */ 	mtc1	$zero,$f18
 /*  f06e66c:	8faf0068 */ 	lw	$t7,0x68($sp)
diff --git a/src/include/game/game_096ca0.h b/src/include/game/game_096ca0.h
index 56eecde53..a4ecfbb1a 100644
--- a/src/include/game/game_096ca0.h
+++ b/src/include/game/game_096ca0.h
@@ -10,7 +10,7 @@ void func0f097044(Mtxf *matrix, f32 arg1[4]);
 void quaternionToTransformMtx(struct coord *pos, f32 rot[4], Mtxf *matrix);
 void func0f0972b8(f32 arg0[4], f32 arg1[4], f32 arg2, f32 *arg3);
 u32 func0f097518(void);
-void func0f0976c0(f32 arg0[4], f32 arg1[4]);
+void quaternion0f0976c0(f32 q1[4], f32 q2[4]);
 void func0f097738(f32 *arg0, f32 *arg1, f32 *arg2);
 
 #endif
diff --git a/src/lib/model.c b/src/lib/model.c
index c5357497c..00a722278 100644
--- a/src/lib/model.c
+++ b/src/lib/model.c
@@ -734,7 +734,7 @@ void model0001b400(struct modelrenderdata *arg0, struct model *model, struct mod
 		}
 
 		quaternion0f096ca0(&sp230, spfc);
-		func0f0976c0(spfc, spec);
+		quaternion0f0976c0(spfc, spec);
 		func0f0972b8(spfc, spec, anim->fracmerge, &spdc);
 		quaternionToMtx(&spdc, &sp1d8);
 	} else {
@@ -1511,7 +1511,7 @@ glabel var70053fc0pf
 /*    1bfdc:	0fc25af0 */ 	jal	quaternion0f096ca0
 /*    1bfe0:	27a50078 */ 	addiu	$a1,$sp,0x78
 /*    1bfe4:	27a40088 */ 	addiu	$a0,$sp,0x88
-/*    1bfe8:	0fc25d78 */ 	jal	func0f0976c0
+/*    1bfe8:	0fc25d78 */ 	jal	quaternion0f0976c0
 /*    1bfec:	27a50078 */ 	addiu	$a1,$sp,0x78
 /*    1bff0:	27a70068 */ 	addiu	$a3,$sp,0x68
 /*    1bff4:	27a40088 */ 	addiu	$a0,$sp,0x88
@@ -1926,7 +1926,7 @@ glabel model0001bfa8
 /*    1c220:	0fc25b28 */ 	jal	quaternion0f096ca0
 /*    1c224:	27a50078 */ 	addiu	$a1,$sp,0x78
 /*    1c228:	27a40088 */ 	addiu	$a0,$sp,0x88
-/*    1c22c:	0fc25db0 */ 	jal	func0f0976c0
+/*    1c22c:	0fc25db0 */ 	jal	quaternion0f0976c0
 /*    1c230:	27a50078 */ 	addiu	$a1,$sp,0x78
 /*    1c234:	27a70068 */ 	addiu	$a3,$sp,0x68
 /*    1c238:	27a40088 */ 	addiu	$a0,$sp,0x88