diff --git a/b2g/chrome/content/shell.js b/b2g/chrome/content/shell.js
index 7db27d84401e..8d8a05a08073 100644
--- a/b2g/chrome/content/shell.js
+++ b/b2g/chrome/content/shell.js
@@ -783,10 +783,6 @@ var CustomEventManager = {
       case 'inputmethod-update-layouts':
         KeyboardHelper.handleEvent(detail);
         break;
-      case 'nfc-hardware-state-change':
-        Services.obs.notifyObservers(null, 'nfc-hardware-state-change',
-          JSON.stringify({ nfcHardwareState: detail.nfcHardwareState }));
-        break;
     }
   }
 }
diff --git a/dom/system/gonk/Nfc.js b/dom/system/gonk/Nfc.js
index 2147adab2178..35da7f1d415e 100644
--- a/dom/system/gonk/Nfc.js
+++ b/dom/system/gonk/Nfc.js
@@ -416,7 +416,6 @@ function Nfc() {
   this.worker.onmessage = this.onmessage.bind(this);
 
   Services.obs.addObserver(this, NFC.TOPIC_MOZSETTINGS_CHANGED, false);
-  Services.obs.addObserver(this, NFC.TOPIC_HARDWARE_STATE, false);
 
   gMessageManager.init(this);
   let lock = gSettingsService.createLock();
@@ -657,28 +656,11 @@ Nfc.prototype = {
           this.handle(setting.key, setting.value);
         }
         break;
-      case NFC.TOPIC_HARDWARE_STATE:
-        let state = JSON.parse(data);
-        if (state) {
-          let level = this.hardwareStateToPowerlevel(state.nfcHardwareState);
-          this.setConfig({ powerLevel: level });
-        }
-        break;
     }
   },
 
   setConfig: function setConfig(prop) {
     this.sendToWorker("config", prop);
-  },
-
-  hardwareStateToPowerlevel: function hardwareStateToPowerlevel(state) {
-    switch (state) {
-      case 0:   return NFC.NFC_POWER_LEVEL_DISABLED;
-      case 1:   return NFC.NFC_POWER_LEVEL_ENABLED;
-      case 2:   return NFC.NFC_POWER_LEVEL_ENABLED;
-      case 3:   return NFC.NFC_POWER_LEVEL_LOW;
-      default:  return NFC.NFC_POWER_LEVEL_UNKNOWN;
-    }
   }
 };
 
diff --git a/dom/system/gonk/nfc_consts.js b/dom/system/gonk/nfc_consts.js
index 3fe730251fa3..b3d6f6d2bd31 100644
--- a/dom/system/gonk/nfc_consts.js
+++ b/dom/system/gonk/nfc_consts.js
@@ -63,7 +63,6 @@ this.NFC_POWER_LEVEL_ENABLED        = 2;
 
 this.TOPIC_MOZSETTINGS_CHANGED      = "mozsettings-changed";
 this.TOPIC_XPCOM_SHUTDOWN           = "xpcom-shutdown";
-this.TOPIC_HARDWARE_STATE           = "nfc-hardware-state-change";
 this.SETTING_NFC_ENABLED            = "nfc.enabled";
 
 this.NFC_PEER_EVENT_READY = 0x01;