diff --git a/tools/mkimage/Makefile b/tools/mkimage/Makefile
index c2cbb53a2d5bcf70e511906e39fa812da70c79bf..beeecb85c5aa0b52479120a2d2e29368d9ce0dea 100644
--- a/tools/mkimage/Makefile
+++ b/tools/mkimage/Makefile
@@ -21,7 +21,7 @@ include $(INCLUDE_DIR)/host-build.mk
 define Host/Compile
 	rm -f $(HOST_BUILD_DIR)/tools/.depend
 	touch $(HOST_BUILD_DIR)/include/config.{h,mk} $(HOST_BUILD_DIR)/include/autoconf.mk{.dep,}
-	$(MAKE) -C $(HOST_BUILD_DIR) SUBDIRS=tools BIN_FILES-y="mkimage" tools
+	$(MAKE) -C $(HOST_BUILD_DIR) BUILD_DIR= SUBDIRS=tools BIN_FILES-y="mkimage" tools
 endef
 
 define Host/Install