diff --git a/gradle/build.gradle b/gradle/build.gradle
index 6ea7067..823e3e8 100644
--- a/gradle/build.gradle
+++ b/gradle/build.gradle
@@ -10,7 +10,7 @@ subprojects {
     apply plugin: "eclipse"
     apply plugin: "pmd"
     
-    targetCompatibility = 1.8
+    sourceCompatibility = 1.8
     targetCompatibility = 1.8
 
     repositories {