diff --git a/libsrc/Makefile b/libsrc/Makefile
index 8d06be391..7b8e1642a 100644
--- a/libsrc/Makefile
+++ b/libsrc/Makefile
@@ -163,6 +163,7 @@ cbm510lib:
 	done
 	mv cbm510/crt0.o cbm510.o
 	cp cbm510/*.emd .
+	cp cbm510/*.joy .
 
 #-----------------------------------------------------------------------------
 # PET-II series