diff --git a/Plan/build.gradle b/Plan/build.gradle
index df496fe2b..55656e5ae 100644
--- a/Plan/build.gradle
+++ b/Plan/build.gradle
@@ -20,6 +20,11 @@ allprojects {
             exceptionFormat "full"
         }
     }
+
+    // Fix for UTF-8 files showing with wrong encoding when compiled on Windows machines.
+    tasks.withType(JavaCompile) {
+        options.encoding = 'UTF-8'
+    }
 }
 
 subprojects {