diff --git a/src/game/chr/chraicommands.c b/src/game/chr/chraicommands.c
index c79e5d41d..74ce8d567 100644
--- a/src/game/chr/chraicommands.c
+++ b/src/game/chr/chraicommands.c
@@ -5537,22 +5537,15 @@ glabel ai010e
 /**
  * @cmd 0098
  */
-GLOBAL_ASM(
-glabel ai0098
-/*  f053bd4:	3c04800a */ 	lui	$a0,0x800a
-/*  f053bd8:	24849fc0 */ 	addiu	$a0,$a0,-24640
-/*  f053bdc:	8c8e0434 */ 	lw	$t6,0x434($a0)
-/*  f053be0:	8c8f0438 */ 	lw	$t7,0x438($a0)
-/*  f053be4:	8c990424 */ 	lw	$t9,0x424($a0)
-/*  f053be8:	00001025 */ 	or	$v0,$zero,$zero
-/*  f053bec:	01cf1821 */ 	addu	$v1,$t6,$t7
-/*  f053bf0:	80780002 */ 	lb	$t8,0x2($v1)
-/*  f053bf4:	a3380003 */ 	sb	$t8,0x3($t9)
-/*  f053bf8:	8c880438 */ 	lw	$t0,0x438($a0)
-/*  f053bfc:	25090003 */ 	addiu	$t1,$t0,0x3
-/*  f053c00:	03e00008 */ 	jr	$ra
-/*  f053c04:	ac890438 */ 	sw	$t1,0x438($a0)
-);
+bool aiSetReactionSpeed(void)
+{
+	s8 *cmd = g_Vars.ailist + g_Vars.aioffset;
+
+	g_Vars.chrdata->speedrating = cmd[2];
+	g_Vars.aioffset += 3;
+
+	return false;
+}
 
 /**
  * @cmd 0099
diff --git a/src/include/game/chr/chraicommands.h b/src/include/game/chr/chraicommands.h
index 9c34f5c0f..ddf5b439a 100644
--- a/src/include/game/chr/chraicommands.h
+++ b/src/include/game/chr/chraicommands.h
@@ -154,7 +154,7 @@
 /*0x0095*/ bool aiSetChrNum(void);
 /*0x0096*/ bool ai0096(void);
 /*0x0097*/ bool ai0097(void);
-/*0x0098*/ bool ai0098(void);
+/*0x0098*/ bool aiSetReactionSpeed(void);
 /*0x0099*/ bool ai0099(void);
 /*0x009a*/ bool ai009a(void);
 /*0x009b*/ bool ai009b(void);
diff --git a/src/include/types.h b/src/include/types.h
index 6d672f296..d7299b08c 100644
--- a/src/include/types.h
+++ b/src/include/types.h
@@ -34,7 +34,7 @@ struct bitfielddata {
 struct chrdata {
 	/*0x000*/ s16 chrnum;
 	/*0x002*/ u8 accuracyrating;
-	/*0x003*/ u8 speedrating;
+	/*0x003*/ s8 speedrating;
 	/*0x004*/ u16 firecount;
 	/*0x006*/ u8 headnum;
 	/*0x007*/ s8 actiontype;
diff --git a/src/setup/setup_000000.c b/src/setup/setup_000000.c
index 09077784d..27e918745 100644
--- a/src/setup/setup_000000.c
+++ b/src/setup/setup_000000.c
@@ -14105,7 +14105,7 @@ bool (*command_pointers[])(void) = {
 	/*0x0095*/ aiSetChrNum,
 	/*0x0096*/ ai0096,
 	/*0x0097*/ ai0097,
-	/*0x0098*/ ai0098,
+	/*0x0098*/ aiSetReactionSpeed,
 	/*0x0099*/ ai0099,
 	/*0x009a*/ ai009a,
 	/*0x009b*/ ai009b,