diff --git a/ethereumj-core/build.gradle b/ethereumj-core/build.gradle
index b4baf172..6defe5af 100644
--- a/ethereumj-core/build.gradle
+++ b/ethereumj-core/build.gradle
@@ -75,8 +75,8 @@ antlr4 {
     output = file("${generatedSrcDir}/org/ethereum/serpent")
 }
 
+preBuild.dependsOn antlr4
 
-//compileJava.dependsOn antlr4
 configurations {
     compile.extendsFrom antlr4
 }