diff --git a/board/syteco/jadecpu/Makefile b/board/syteco/jadecpu/Makefile
index 8e96c5e..7426436 100644
--- a/board/syteco/jadecpu/Makefile
+++ b/board/syteco/jadecpu/Makefile
@@ -9,25 +9,5 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS-y	+= jadecpu.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS-y))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	+= jadecpu.o
+obj-y	+= lowlevel_init.o
diff --git a/board/syteco/zmx25/Makefile b/board/syteco/zmx25/Makefile
index 8c289bd..d5edb48 100644
--- a/board/syteco/zmx25/Makefile
+++ b/board/syteco/zmx25/Makefile
@@ -5,25 +5,5 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS-y	+= zmx25.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS-y))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	+= zmx25.o
+obj-y	+= lowlevel_init.o