diff --git a/example/unity/DemoApp/Assets/FlutterUnityIntegration/Editor/Build.cs b/example/unity/DemoApp/Assets/FlutterUnityIntegration/Editor/Build.cs
index a627cd2cc..d3918677c 100644
--- a/example/unity/DemoApp/Assets/FlutterUnityIntegration/Editor/Build.cs
+++ b/example/unity/DemoApp/Assets/FlutterUnityIntegration/Editor/Build.cs
@@ -350,8 +350,7 @@ private static void ModifyAndroidGradle(bool isPlugin)
             // Modify proguard-unity.txt
             var proguardFile = Path.Combine(AndroidExportPath, "proguard-unity.txt");
             var proguardText = File.ReadAllText(proguardFile);
-            proguardText = proguardText.Replace("-ignorewarnings", "-keep class com.xraph.plugin.** { *; }\n-ignorewarnings");
-            proguardText += "-keep class com.unity3d.plugin.* { *; }";
+	    proguardText = proguardText.Replace("-ignorewarnings", "-keep class com.xraph.plugin.** { *; }\n-keep class com.unity3d.plugin.* { *; }\n-ignorewarnings");
             File.WriteAllText(proguardFile, proguardText);
         }