diff --git a/gradle/maven-deployment.gradle b/gradle/maven-deployment.gradle
index 84a3679fca..4be1515b66 100644
--- a/gradle/maven-deployment.gradle
+++ b/gradle/maven-deployment.gradle
@@ -3,7 +3,8 @@ apply plugin: 'maven'
 // Create a source jar for uploading
 task sourceJar(type: Jar) {
     classifier = 'sources'
-    from sourceSets.main.java
+    from sourceSets.main.java.srcDirs
+    include '**/*.java', '**/*.aj'
 }
 
 artifacts {