diff --git a/make/linux-rpm.mk b/make/linux-rpm.mk
index 4774c4b4..c88cebbf 100644
--- a/make/linux-rpm.mk
+++ b/make/linux-rpm.mk
@@ -71,7 +71,7 @@ PATCHES                 += $(wildcard $(LINUX_KERNEL_PATCH_DIR)/*-$(KERNEL_VERSI
                            $(wildcard $(LINUX_KERNEL_PATCH_DIR)/*-$(KERNEL_VERSION).diff)
 LOCAL_PATCHES            = $(notdir $(PATCHES))
 
-LOCAL_PRE_BUILD = patches.done
+LOCAL_PRE_BUILD += patches.done
 
 # exports
 export KERNEL_VERSION