diff --git a/board/Marvell/db-88f6281-bp/Makefile b/board/Marvell/db-88f6281-bp/Makefile
index e6aa7e3..003e9f6 100644
--- a/board/Marvell/db-88f6281-bp/Makefile
+++ b/board/Marvell/db-88f6281-bp/Makefile
@@ -4,9 +4,9 @@
 extra-y := kwbimage.cfg
 
 quiet_cmd_sed = SED     $@
-      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $<)$(@F)
+      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $@)$(@F)
 
 SEDFLAGS_kwbimage.cfg = -e "s/^\#@BOOT_FROM.*/BOOT_FROM	$(if $(CONFIG_CMD_NAND),nand,spi)/"
-$(src)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
+$(obj)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
 		include/config/auto.conf
 	$(call if_changed,sed)
diff --git a/board/Marvell/db-xc3-24g4xg/Makefile b/board/Marvell/db-xc3-24g4xg/Makefile
index 4dd5790..24e8200 100644
--- a/board/Marvell/db-xc3-24g4xg/Makefile
+++ b/board/Marvell/db-xc3-24g4xg/Makefile
@@ -6,9 +6,9 @@
 extra-y	:= kwbimage.cfg
 
 quiet_cmd_sed = SED     $@
-      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $<)$(@F)
+      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $@)$(@F)
 
 SEDFLAGS_kwbimage.cfg =-e "s|^BINARY.*|BINARY $(srctree)/$(@D)/binary.0 0000005b 00000068|"
-$(src)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
+$(obj)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
 		include/config/auto.conf
 	  $(call if_changed,sed)
diff --git a/board/mikrotik/crs305-1g-4s/Makefile b/board/mikrotik/crs305-1g-4s/Makefile
index 895331b..c03f534 100644
--- a/board/mikrotik/crs305-1g-4s/Makefile
+++ b/board/mikrotik/crs305-1g-4s/Makefile
@@ -6,9 +6,9 @@
 extra-y	:= kwbimage.cfg
 
 quiet_cmd_sed = SED     $@
-      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $<)$(@F)
+      cmd_sed = sed $(SEDFLAGS_$(@F)) $< >$(dir $@)$(@F)
 
 SEDFLAGS_kwbimage.cfg =-e "s|^BINARY.*|BINARY $(srctree)/$(@D)/binary.0 0000005b 00000068|"
-$(src)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
+$(obj)/kwbimage.cfg: $(src)/kwbimage.cfg.in include/autoconf.mk \
 		include/config/auto.conf
 	  $(call if_changed,sed)