diff --git a/jsonschema2pojo-gradle-plugin/src/main/groovy/org/jsonschema2pojo/gradle/GenerateJsonSchemaJavaTask.groovy b/jsonschema2pojo-gradle-plugin/src/main/groovy/org/jsonschema2pojo/gradle/GenerateJsonSchemaJavaTask.groovy
index e7f0f937e..9b2f4a352 100644
--- a/jsonschema2pojo-gradle-plugin/src/main/groovy/org/jsonschema2pojo/gradle/GenerateJsonSchemaJavaTask.groovy
+++ b/jsonschema2pojo-gradle-plugin/src/main/groovy/org/jsonschema2pojo/gradle/GenerateJsonSchemaJavaTask.groovy
@@ -85,7 +85,7 @@ class GenerateJsonSchemaJavaTask extends DefaultTask {
   void setTargetVersion(JsonSchemaExtension configuration) {
     if (!configuration.targetVersion) {
       def compileJavaTask = project.getTasksByName("compileJava", false).first()
-      configuration.targetVersion = compileJavaTask.getProperties().get("sourceCompatibility")
+      configuration.targetVersion = compileJavaTask.sourceCompatibility
       logger.info 'Using Gradle sourceCompatibility as targetVersion for jsonschema2pojo: ' + configuration.targetVersion
     }
   }