diff --git a/Makefile.am b/Makefile.am
index 4ff49f0..79b2e17 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,4 +1,4 @@
-SOURCES = d-.scm d-/test.scm d-/json.scm
+SOURCES = d-.scm d-/test.scm d-/json.scm d-/oop.scm
 
 GOBJECTS = $(SOURCES:%.scm=%.go)
 GUILD = @GUILD@