diff --git a/gnu/lib/libobjc/Makefile b/gnu/lib/libobjc/Makefile
index de10f711c53a..f00ee0be2214 100644
--- a/gnu/lib/libobjc/Makefile
+++ b/gnu/lib/libobjc/Makefile
@@ -13,7 +13,7 @@ SRCS=	archive.c class.c encoding.c gc.c hash.c init.c linking.m misc.c \
 	nil_method.c NXConstStr.m Object.m objects.c Protocol.m sarray.c \
 	selector.c sendmsg.c thr.c thr-objc.c exception.c
 
-INCS=	encoding.h hash.h objc-api.h objc-list.h objc.h runtime.h \
+INCS=	encoding.h hash.h objc-api.h objc-decls.h objc-list.h objc.h runtime.h \
 	sarray.h thr.h typedstream.h NXConstStr.h Object.h Protocol.h
 INCSDIR=${INCLUDEDIR}/objc