diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-volley/build.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-volley/build.mustache
index 341884176a93..e12ca8c4c739 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-volley/build.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-volley/build.mustache
@@ -57,20 +57,8 @@ android {
     }
     compileOptions {
         coreLibraryDesugaringEnabled true
-        {{#supportJava6}}
-        sourceCompatibility JavaVersion.VERSION_1_6
-        targetCompatibility JavaVersion.VERSION_1_6
-        {{/supportJava6}}
-        {{^supportJava6}}
-        {{#java8}}
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
-        {{/java8}}
-        {{^java8}}
-        sourceCompatibility JavaVersion.VERSION_1_7
-        targetCompatibility JavaVersion.VERSION_1_7
-        {{/java8}}
-        {{/supportJava6}}
     }
     lintOptions {
         abortOnError false