diff --git a/app/build.gradle b/app/build.gradle
index 4767bd70e..8cf149296 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -196,19 +196,10 @@ android {
         dataBinding = true
     }
 
-    compileOptions {
-        //sourceCompatibility JavaVersion.VERSION_1_8
-        //targetCompatibility JavaVersion.VERSION_1_8
-    }
-
     adbOptions {
         installOptions '-g', '-r'
     }
 
-    kotlinOptions {
-        //jvmTarget = "1.8"
-    }
-
     namespace 'org.linphone'
     testBuildType 'debug'
 }