diff --git a/NovaAdapter.podspec b/NovaAdapter.podspec
index 0db4210..9ed299a 100644
--- a/NovaAdapter.podspec
+++ b/NovaAdapter.podspec
@@ -5,7 +5,7 @@ Pod::Spec.new do |spec|
   
 
   spec.name         = "NovaAdapter"
-  spec.version      = "0.0.71"
+  spec.version      = "0.0.72"
   spec.summary      = "an adapter for Google SDK"
   spec.description  = "an adapter for Google SDK for MSP S2S"
 
diff --git a/NovaAdapter/NovaAdapter.xcodeproj/xcuserdata/huanzhizhang.xcuserdatad/xcschemes/xcschememanagement.plist b/NovaAdapter/NovaAdapter.xcodeproj/xcuserdata/huanzhizhang.xcuserdatad/xcschemes/xcschememanagement.plist
index e97d4b9..9256b28 100644
--- a/NovaAdapter/NovaAdapter.xcodeproj/xcuserdata/huanzhizhang.xcuserdatad/xcschemes/xcschememanagement.plist
+++ b/NovaAdapter/NovaAdapter.xcodeproj/xcuserdata/huanzhizhang.xcuserdatad/xcschemes/xcschememanagement.plist
@@ -7,7 +7,7 @@
 		<key>NovaAdapter.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>4</integer>
+			<integer>6</integer>
 		</dict>
 	</dict>
 </dict>
diff --git a/NovaAdapter/NovaAdapter/NovaAdapter.swift b/NovaAdapter/NovaAdapter/NovaAdapter.swift
index fddccd3..1ee642a 100644
--- a/NovaAdapter/NovaAdapter/NovaAdapter.swift
+++ b/NovaAdapter/NovaAdapter/NovaAdapter.swift
@@ -77,7 +77,7 @@ public class NovaAdapter: AdNetworkAdapter {
         guard let nativeAdView = nativeAdView as? NativeAdView,
               let mediaView = nativeAdView.mediaView as? NovaNativeAdMediaView,
               let novaNativeAdItem = self.nativeAdItem,
-              let rootViewController = nativeAdView.rootViewController else {
+              let rootViewController = self.adListener?.getRootViewController() else {
             self.adListener?.onError(msg: "fail to render native view")
             return
         }