diff --git a/include/nu/nusys.h b/include/nu/nusys.h
index 95cbab5..94637f8 100644
--- a/include/nu/nusys.h
+++ b/include/nu/nusys.h
@@ -689,6 +689,7 @@ extern u32		nuContDataLockKey; /* Lock Controller data. */
 extern OSMesgQueue	nuContWaitMesgQ; /* Wait for Controller read */
 extern OSMesg nuContWaitMesgBuf;
 extern OSMesgQueue nuContDataMutexQ;
+extern OSMesg nuContDataMutexBuf;
 extern OSPfs		nuContPfs[];
 extern NUCallBackList	nuContCallBack;
 extern u16		nuContPakCompanyCode;	/* Company code */
diff --git a/linker_scripts/symbols/addr.txt b/linker_scripts/symbols/addr.txt
index 2acecba..fc557fe 100644
--- a/linker_scripts/symbols/addr.txt
+++ b/linker_scripts/symbols/addr.txt
@@ -34,6 +34,7 @@ nuPiMesgBuf = 0x800BE048;
 nuContWaitMesgQ = 0x800C4A00;
 nuContWaitMesgBuf = 0x800BE190;
 nuContDataMutexQ = 0x800E9BF0;
+nuContDataMutexBuf = 0x800BE194;
 
 nuBoot = 0x8007F880;
 nuScCreateScheduler = 0x80088C50; // rom:0x19050
@@ -924,7 +925,6 @@ MQ_800B1880 = 0x800B1880;
 MQ_800E79C8 = 0x800E79C8;
 MQ_800C49E8 = 0x800C49E8;
 
-OSMESG_800BE194 = 0x800BE194;
 OSMESG_800B1870 = 0x800B1870;
 OSMESG_800B17D0 = 0x800B17D0;
 OSMESG_800B17E0 = 0x800B17E0;
diff --git a/src/_ob_prized_reading.c b/src/_ob_prized_reading.c
index 95431e0..6d0b144 100644
--- a/src/_ob_prized_reading.c
+++ b/src/_ob_prized_reading.c
@@ -2,8 +2,6 @@
 
 #include "nu/nusys.h"
 
-extern OSMesg OSMESG_800BE194;
-
 extern u32 obStackMain;
 
 /* 1A660 8008A260 */
@@ -14,7 +12,7 @@ u8 nuContMgrInit(void) {
 
     nuContDataUnLock();
     osCreateMesgQueue(&nuContWaitMesgQ, &nuContWaitMesgBuf, 1);
-    osCreateMesgQueue(&nuContDataMutexQ, &OSMESG_800BE194, 1);
+    osCreateMesgQueue(&nuContDataMutexQ, &nuContDataMutexBuf, 1);
     nuSiCallBackAdd(&D_800A9FF8);
     nuContQueryRead();