diff --git a/generator/nanopb.proto b/generator/nanopb.proto
index bc40f29..4066252 100644
--- a/generator/nanopb.proto
+++ b/generator/nanopb.proto
@@ -7,6 +7,8 @@
 
 import "google/protobuf/descriptor.proto";
 
+option java_package = "fi.kapsi.koti.jpa.nanopb";
+
 enum FieldType {
     FT_DEFAULT = 0; // Automatically decide field type, generate static field if possible.
     FT_CALLBACK = 1; // Always generate a callback field.