diff --git a/japanese/Makefile b/japanese/Makefile
index 15f0a92c920a..d1d09194f6bb 100644
--- a/japanese/Makefile
+++ b/japanese/Makefile
@@ -169,6 +169,7 @@
     SUBDIR += onew-canna+wnn6
     SUBDIR += onew-wnn4
     SUBDIR += onew-wnn6
+    SUBDIR += p5-Jcode
     SUBDIR += p5-jcode.pl
     SUBDIR += p5-manual
     SUBDIR += p5-mkres