diff --git a/android/src/main/java/com/sbugert/rnadmob/RNAdMobInterstitialAdModule.java b/android/src/main/java/com/sbugert/rnadmob/RNAdMobInterstitialAdModule.java
index 67cc04de1..577993341 100644
--- a/android/src/main/java/com/sbugert/rnadmob/RNAdMobInterstitialAdModule.java
+++ b/android/src/main/java/com/sbugert/rnadmob/RNAdMobInterstitialAdModule.java
@@ -6,6 +6,7 @@
 
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.Promise;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
@@ -26,8 +27,8 @@ public class RNAdMobInterstitialAdModule extends ReactContextBaseJavaModule {
   InterstitialAd mInterstitialAd;
   String adUnitID;
   String[] testDevices;
-  Callback requestAdCallback;
-  Callback showAdCallback;
+
+  private Promise mRequestAdPromise;
 
   @Override
   public String getName() {
@@ -45,7 +46,6 @@ public void run() {
           @Override
           public void onAdClosed() {
             sendEvent("interstitialDidClose", null);
-            showAdCallback.invoke();
           }
           @Override
           public void onAdFailedToLoad(int errorCode) {
@@ -65,9 +65,10 @@ public void onAdFailedToLoad(int errorCode) {
                 errorString = "ERROR_CODE_NO_FILL";
                 break;
             }
-            event.putString("error", errorString);
+
+            event.putString("message", errorString);
             sendEvent("interstitialDidFailToLoad", event);
-            requestAdCallback.invoke(errorString);
+            mRequestAdPromise.reject(errorString, errorString);
           }
           @Override
           public void onAdLeftApplication() {
@@ -76,7 +77,7 @@ public void onAdLeftApplication() {
           @Override
           public void onAdLoaded() {
             sendEvent("interstitialDidLoad", null);
-            requestAdCallback.invoke();
+            mRequestAdPromise.resolve(null);
           }
           @Override
           public void onAdOpened() {
@@ -103,14 +104,14 @@ public void setTestDevices(ReadableArray testDevices) {
   }
 
   @ReactMethod
-  public void requestAd(final Callback callback) {
+  public void requestAd(final Promise promise) {
     new Handler(Looper.getMainLooper()).post(new Runnable() {
       @Override
       public void run () {
         if (mInterstitialAd.isLoaded() || mInterstitialAd.isLoading()) {
-          callback.invoke("Ad is already loaded."); // TODO: make proper error
+          promise.reject("E_AD_ALREADY_LOADED", "Ad is already loaded.");
         } else {
-          requestAdCallback = callback;
+          mRequestAdPromise = promise;
           AdRequest.Builder adRequestBuilder = new AdRequest.Builder();
           if (testDevices != null) {
             for (int i = 0; i < testDevices.length; i++) {
@@ -125,15 +126,15 @@ public void run () {
   }
 
   @ReactMethod
-  public void showAd(final Callback callback) {
+  public void showAd(final Promise promise) {
     new Handler(Looper.getMainLooper()).post(new Runnable() {
       @Override
       public void run () {
         if (mInterstitialAd.isLoaded()) {
-          showAdCallback = callback;
           mInterstitialAd.show();
+          promise.resolve(null);
         } else {
-          callback.invoke("Ad is not ready."); // TODO: make proper error
+          promise.reject("E_AD_NOT_READY", "Ad is not ready.");
         }
       }
     });
diff --git a/android/src/main/java/com/sbugert/rnadmob/RNAdMobRewardedVideoAdModule.java b/android/src/main/java/com/sbugert/rnadmob/RNAdMobRewardedVideoAdModule.java
index 20e6e1571..08db2ec3f 100644
--- a/android/src/main/java/com/sbugert/rnadmob/RNAdMobRewardedVideoAdModule.java
+++ b/android/src/main/java/com/sbugert/rnadmob/RNAdMobRewardedVideoAdModule.java
@@ -6,6 +6,7 @@
 
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.Promise;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
@@ -25,8 +26,8 @@ public class RNAdMobRewardedVideoAdModule extends ReactContextBaseJavaModule imp
     RewardedVideoAd mRewardedVideoAd;
     String adUnitID;
     String[] testDevices;
-    Callback requestAdCallback;
-    Callback showAdCallback;
+
+    private Promise mRequestAdPromise;
 
     @Override
     public String getName() {
@@ -50,7 +51,7 @@ public void onRewarded(RewardItem rewardItem) {
     @Override
     public void onRewardedVideoAdLoaded() {
         sendEvent("rewardedVideoDidLoad", null);
-        requestAdCallback.invoke();
+        mRequestAdPromise.resolve(null);
     }
 
     @Override
@@ -93,9 +94,9 @@ public void onRewardedVideoAdFailedToLoad(int errorCode) {
             break;
         }
 
-        event.putString("error", errorString);
+        event.putString("message", errorString);
         sendEvent("rewardedVideoDidFailToLoad", event);
-        requestAdCallback.invoke(errorString);
+        mRequestAdPromise.reject(errorString, errorString);
     }
 
     private void sendEvent(String eventName, @Nullable WritableMap params) {
@@ -115,7 +116,7 @@ public void setTestDevices(ReadableArray testDevices) {
     }
 
     @ReactMethod
-    public void requestAd(final Callback callback) {
+    public void requestAd(final Promise promise) {
         new Handler(Looper.getMainLooper()).post(new Runnable() {
             @Override
             public void run () {
@@ -124,9 +125,9 @@ public void run () {
                 RNAdMobRewardedVideoAdModule.this.mRewardedVideoAd.setRewardedVideoAdListener(RNAdMobRewardedVideoAdModule.this);
 
                 if (mRewardedVideoAd.isLoaded()) {
-                    callback.invoke("Ad is already loaded."); // TODO: make proper error
+                    promise.reject("E_AD_ALREADY_LOADED", "Ad is already loaded.");
                 } else {
-                    requestAdCallback = callback;
+                    mRequestAdPromise = promise;
 
                     AdRequest.Builder adRequestBuilder = new AdRequest.Builder();
 
@@ -144,15 +145,15 @@ public void run () {
     }
 
     @ReactMethod
-    public void showAd(final Callback callback) {
+    public void showAd(final Promise promise) {
         new Handler(Looper.getMainLooper()).post(new Runnable() {
             @Override
             public void run () {
                 if (mRewardedVideoAd.isLoaded()) {
-                    showAdCallback = callback;
                     mRewardedVideoAd.show();
+                    promise.resolve(null);
                 } else {
-                    callback.invoke("Ad is not ready."); // TODO: make proper error
+                    promise.reject("E_AD_NOT_READY", "Ad is not ready.");
                 }
             }
         });