diff --git a/src/game/chr/chraicommands.c b/src/game/chr/chraicommands.c
index d529b6850..5b7e05662 100644
--- a/src/game/chr/chraicommands.c
+++ b/src/game/chr/chraicommands.c
@@ -7776,7 +7776,7 @@ bool aiResetTimer(void)
  */
 bool aiPauseTimer(void)
 {
-	g_Vars.chrdata->hidden &= 0xffffffbf;
+	g_Vars.chrdata->hidden &= ~CHRFLAG2_TIMER_RUNNING;
 	g_Vars.aioffset += 2;
 
 	return false;
@@ -7785,20 +7785,13 @@ bool aiPauseTimer(void)
 /**
  * @cmd 00b9
  */
-GLOBAL_ASM(
-glabel ai00b9
-/*  f054fe8:	3c04800a */ 	lui	$a0,0x800a
-/*  f054fec:	24849fc0 */ 	addiu	$a0,$a0,-24640
-/*  f054ff0:	8c830424 */ 	lw	$v1,0x424($a0)
-/*  f054ff4:	00001025 */ 	or	$v0,$zero,$zero
-/*  f054ff8:	8c6e0014 */ 	lw	$t6,0x14($v1)
-/*  f054ffc:	35cf0040 */ 	ori	$t7,$t6,0x40
-/*  f055000:	ac6f0014 */ 	sw	$t7,0x14($v1)
-/*  f055004:	8c980438 */ 	lw	$t8,0x438($a0)
-/*  f055008:	27190002 */ 	addiu	$t9,$t8,0x2
-/*  f05500c:	03e00008 */ 	jr	$ra
-/*  f055010:	ac990438 */ 	sw	$t9,0x438($a0)
-);
+bool aiResumeTimer(void)
+{
+	g_Vars.chrdata->hidden |= CHRFLAG2_TIMER_RUNNING;
+	g_Vars.aioffset += 2;
+
+	return false;
+}
 
 /**
  * @cmd 00ba
diff --git a/src/include/constants.h b/src/include/constants.h
index d192c348d..bbe1f771a 100644
--- a/src/include/constants.h
+++ b/src/include/constants.h
@@ -159,14 +159,14 @@
 #define CHRFLAG1_40000000                  0x40000000 // Globals
 #define CHRFLAG1_80000000                  0x80000000 // Globals
 
-// Character flags - bank 2 (chr struct offset 0x14)
+// Character flags - bank 2 (chr struct offset 0x14 - "hidden")
 #define CHRFLAG2_00000001           0x00000001 // Not used in scripts - sunglasses?
 #define CHRFLAG2_00000002           0x00000002 // Not used in scripts
 #define CHRFLAG2_00000004           0x00000004 // Not used in scripts
 #define CHRFLAG2_00000008           0x00000008 // Not used in scripts
 #define CHRFLAG2_00000010           0x00000010 // Not used in scripts
 #define CHRFLAG2_00000020           0x00000020 // Not used in scripts
-#define CHRFLAG2_00000040           0x00000040 // Not used in scripts
+#define CHRFLAG2_TIMER_RUNNING      0x00000040
 #define CHRFLAG2_00000080           0x00000080 // Not used in scripts
 #define CHRFLAG2_00000100           0x00000100 // Not used in scripts
 #define CHRFLAG2_00000200           0x00000200 // Not used in scripts
diff --git a/src/include/game/chr/chraicommands.h b/src/include/game/chr/chraicommands.h
index 0830dbd9c..53a7770f9 100644
--- a/src/include/game/chr/chraicommands.h
+++ b/src/include/game/chr/chraicommands.h
@@ -187,7 +187,7 @@
 /*0x00b6*/ bool aiRestartTimer(void);
 /*0x00b7*/ bool aiResetTimer(void);
 /*0x00b8*/ bool aiPauseTimer(void);
-/*0x00b9*/ bool ai00b9(void);
+/*0x00b9*/ bool aiResumeTimer(void);
 /*0x00ba*/ bool ai00ba(void);
 /*0x00bb*/ bool ai00bb(void);
 /*0x00bc*/ bool ai00bc(void);
diff --git a/src/setup/setup_000000.c b/src/setup/setup_000000.c
index 9dfe0bbe1..447e17ddc 100644
--- a/src/setup/setup_000000.c
+++ b/src/setup/setup_000000.c
@@ -14134,7 +14134,7 @@ bool (*command_pointers[])(void) = {
 	/*0x00b6*/ aiRestartTimer,
 	/*0x00b7*/ aiResetTimer,
 	/*0x00b8*/ aiPauseTimer,
-	/*0x00b9*/ ai00b9,
+	/*0x00b9*/ aiResumeTimer,
 	/*0x00ba*/ ai00ba,
 	/*0x00bb*/ ai00bb,
 	/*0x00bc*/ ai00bc,