diff --git a/build.gradle b/build.gradle
index 75d07a2f..db2fe43f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,6 +10,10 @@ subprojects {
     group = 'org.ethereum'
     version = '0.7.14-SNAPSHOT'
 
+    tasks.withType(Compile) {
+        options.encoding = 'UTF-8'
+    }
+
     repositories {
         jcenter()
     }