diff --git a/linker_scripts/symbols/addr.txt b/linker_scripts/symbols/addr.txt
index 39e45d5..a5ba190 100644
--- a/linker_scripts/symbols/addr.txt
+++ b/linker_scripts/symbols/addr.txt
@@ -37,6 +37,7 @@ nuContDataMutexQ = 0x800E9BF0;
 nuContDataMutexBuf = 0x800BE194;
 nuContCallBack = 0x800A9FF8;
 nuContStatus = 0x800C4B38; // size:0x10 type:u32
+nuContNum = 0x800C6D60;
 
 nuBoot = 0x8007F880;
 nuScCreateScheduler = 0x80088C50; // rom:0x19050
@@ -1012,7 +1013,6 @@ __virtual_mem_alloc = 0x80070F30;
 
 obMain = 0x80071EB0;
 obThreadMain = 0x800AF5F0;
-obStackMain = 0x800C6D60;
 
 entry = 0x80070C00;
 
diff --git a/src/_ob_prized_reading.c b/src/_ob_prized_reading.c
index 912bac1..fe9ce85 100644
--- a/src/_ob_prized_reading.c
+++ b/src/_ob_prized_reading.c
@@ -2,8 +2,6 @@
 
 #include "nu/nusys.h"
 
-extern u32 obStackMain;
-
 /* 1A660 8008A260 */
 u8 nuContMgrInit(void) {
     s32 var_a0;
@@ -19,12 +17,12 @@ u8 nuContMgrInit(void) {
     var_a0 = 1;
     var_a1 = 0;
     var_v1 = 0;
-    obStackMain = 0;
+    nuContNum = 0;
     for(; var_v1 < MAXCONTROLLERS; var_v1++) {
         if (nuContStatus[var_v1].errno == 0) {
             if ((nuContStatus[var_v1].type & CONT_TYPE_MASK) == CONT_TYPE_NORMAL) {
                 var_a1 |= var_a0;
-                obStackMain += 1;
+                nuContNum += 1;
             }
             var_a0 *= 2;
         }
diff --git a/src/boot.c b/src/boot.c
index b16a137..935573e 100644
--- a/src/boot.c
+++ b/src/boot.c
@@ -5,8 +5,6 @@
 extern OSThread nuThreadIdle;
 extern u64 nuStackIdle[];
 
-extern u8 obStackMain[];
-
 void nuIdle(void* arg);
 
 void nuBoot(void) {
@@ -23,7 +21,7 @@ void nuIdle(void* arg) {
 
     osViSetSpecialFeatures(OS_VI_DIVOT_ON | OS_VI_DITHER_FILTER_ON | OS_VI_GAMMA_OFF | OS_VI_GAMMA_DITHER_OFF);
 
-    osCreateThread(&obThreadMain, NU_MAIN_THREAD_ID, obMain, NULL, obStackMain, NU_MAIN_THREAD_PRI);
+    osCreateThread(&obThreadMain, NU_MAIN_THREAD_ID, obMain, NULL, &nuContNum, NU_MAIN_THREAD_PRI);
     osStartThread(&obThreadMain);
 
     osSetThreadPri(&nuThreadIdle, NU_IDLE_THREAD_PRI);