diff --git a/include/host-build.mk b/include/host-build.mk
index 819fff5664..235caaa6fb 100644
--- a/include/host-build.mk
+++ b/include/host-build.mk
@@ -35,13 +35,11 @@ include $(INCLUDE_DIR)/autotools.mk
 _host_target:=$(if $(HOST_QUILT),,.)
 
 Host/Patch:=$(Host/Patch/Default)
-ifneq ($(strip $(HOST_UNPACK)),)
-  define Host/Prepare/Default
-	$(HOST_UNPACK)
+define Host/Prepare/Default
+	$(if $(strip $(HOST_UNPACK)),$(HOST_UNPACK))
 	[ ! -d ./src/ ] || $(CP) ./src/* $(HOST_BUILD_DIR)
 	$(Host/Patch)
-  endef
-endif
+endef
 
 define Host/Prepare
   $(call Host/Prepare/Default)