diff --git a/src/game/chr/chraicommands.c b/src/game/chr/chraicommands.c
index 48c24de93..2895cb301 100644
--- a/src/game/chr/chraicommands.c
+++ b/src/game/chr/chraicommands.c
@@ -5243,36 +5243,18 @@ bool aiIfChrAlertnessLessThan(void)
 /**
  * @cmd 0090
  */
-GLOBAL_ASM(
-glabel ai0090
-/*  f053770:	3c03800a */ 	lui	$v1,0x800a
-/*  f053774:	24639fc0 */ 	addiu	$v1,$v1,-24640
-/*  f053778:	8c620424 */ 	lw	$v0,0x424($v1)
-/*  f05377c:	27bdffe8 */ 	addiu	$sp,$sp,-24
-/*  f053780:	afbf0014 */ 	sw	$ra,0x14($sp)
-/*  f053784:	904f0124 */ 	lbu	$t7,0x124($v0)
-/*  f053788:	904e0113 */ 	lbu	$t6,0x113($v0)
-/*  f05378c:	8c640434 */ 	lw	$a0,0x434($v1)
-/*  f053790:	8c650438 */ 	lw	$a1,0x438($v1)
-/*  f053794:	01cf082a */ 	slt	$at,$t6,$t7
-/*  f053798:	10200007 */ 	beqz	$at,.L0f0537b8
-/*  f05379c:	00853821 */ 	addu	$a3,$a0,$a1
-/*  f0537a0:	0fc13583 */ 	jal	chraiGoToLabel
-/*  f0537a4:	90e60002 */ 	lbu	$a2,0x2($a3)
-/*  f0537a8:	3c03800a */ 	lui	$v1,0x800a
-/*  f0537ac:	24639fc0 */ 	addiu	$v1,$v1,-24640
-/*  f0537b0:	10000003 */ 	beqz	$zero,.L0f0537c0
-/*  f0537b4:	ac620438 */ 	sw	$v0,0x438($v1)
-.L0f0537b8:
-/*  f0537b8:	24b80003 */ 	addiu	$t8,$a1,0x3
-/*  f0537bc:	ac780438 */ 	sw	$t8,0x438($v1)
-.L0f0537c0:
-/*  f0537c0:	8fbf0014 */ 	lw	$ra,0x14($sp)
-/*  f0537c4:	27bd0018 */ 	addiu	$sp,$sp,0x18
-/*  f0537c8:	00001025 */ 	or	$v0,$zero,$zero
-/*  f0537cc:	03e00008 */ 	jr	$ra
-/*  f0537d0:	00000000 */ 	sll	$zero,$zero,0x0
-);
+bool aiIfAlertnessLessThanRandom(void)
+{
+	u8 *cmd = g_Vars.ailist + g_Vars.aioffset;
+
+	if (g_Vars.chrdata->alertness < g_Vars.chrdata->random) {
+		g_Vars.aioffset = chraiGoToLabel(g_Vars.ailist, g_Vars.aioffset, cmd[2]);
+	} else {
+		g_Vars.aioffset += 3;
+	}
+
+	return false;
+}
 
 /**
  * @cmd 0092
diff --git a/src/include/commands.h b/src/include/commands.h
index 7ef156049..6d3717c84 100644
--- a/src/include/commands.h
+++ b/src/include/commands.h
@@ -606,6 +606,10 @@
 	chr, \
 	label,
 
+#define if_alertness_lt_random(label) \
+	mkshort(0x0090), \
+	label,
+
 // Set their hear distance to value divided by 1000.
 // Only ever called with distance = 10,000, so it gets set to 10.
 #define set_hear_distance(value) \
diff --git a/src/include/game/chr/chraicommands.h b/src/include/game/chr/chraicommands.h
index 0a20c092b..67ca07b7d 100644
--- a/src/include/game/chr/chraicommands.h
+++ b/src/include/game/chr/chraicommands.h
@@ -146,7 +146,7 @@
 /*0x008d*/ bool aiSubtractAlertness(void);
 /*0x008e*/ bool aiIfAlertness(void);
 /*0x008f*/ bool aiIfChrAlertnessLessThan(void);
-/*0x0090*/ bool ai0090(void);
+/*0x0090*/ bool aiIfAlertnessLessThanRandom(void);
 /*0x0091*/ bool ai0091(void);
 /*0x0092*/ bool ai0092(void);
 /*0x0093*/ bool ai0093(void);
diff --git a/src/setup/setup_000000.c b/src/setup/setup_000000.c
index 4ac749a4d..6531c3637 100644
--- a/src/setup/setup_000000.c
+++ b/src/setup/setup_000000.c
@@ -14097,7 +14097,7 @@ bool (*command_pointers[])(void) = {
 	/*0x008d*/ aiSubtractAlertness,
 	/*0x008e*/ aiIfAlertness,
 	/*0x008f*/ aiIfChrAlertnessLessThan,
-	/*0x0090*/ ai0090,
+	/*0x0090*/ aiIfAlertnessLessThanRandom,
 	/*0x0091*/ ai0091,
 	/*0x0092*/ ai0092,
 	/*0x0093*/ ai0093,