diff --git a/common.mk b/common.mk
index 6b4a0b00f1..40aba7991d 100644
--- a/common.mk
+++ b/common.mk
@@ -1609,6 +1609,7 @@ class.$(OBJEXT): {$(VPATH)}config.h
 class.$(OBJEXT): {$(VPATH)}constant.h
 class.$(OBJEXT): {$(VPATH)}defines.h
 class.$(OBJEXT): {$(VPATH)}encoding.h
+class.$(OBJEXT): {$(VPATH)}gc.h
 class.$(OBJEXT): {$(VPATH)}id.h
 class.$(OBJEXT): {$(VPATH)}id_table.h
 class.$(OBJEXT): {$(VPATH)}intern.h