diff --git a/make/linux-rpm.mk b/make/linux-rpm.mk
index 1521c922..12211c09 100644
--- a/make/linux-rpm.mk
+++ b/make/linux-rpm.mk
@@ -107,6 +107,19 @@ version:
 	cvs commit -m "$(KERNEL_VERSION)" RELEASE-$(KERNEL_VERSION)
 	exit 1
 
+patch-%:
+	make patches/$*-$(KERNEL_VERSION).patch
+
+clean-patch-%:
+	rm -f patches/$*-$(KERNEL_VERSION).patch
+	make patches/$*-$(KERNEL_VERSION).patch
+
+patches/%-$(KERNEL_VERSION).patch: unpack.done
+	export LANG=en_US ;\
+		diff --exclude=CVS --unidirectional-new-file -aur linux-$(KERNEL_VERSION) linux-$(KERNEL_VERSION)-$* | \
+		grep -vie "^Nur in \|Only in " > $@.part; exit 0
+	mv $@.part $@
+
 patches.done: unpack.done $(addsuffix .done,$(notdir $(PATCHES)))
 	touch $@
 
@@ -117,17 +130,6 @@ patches.done: unpack.done $(addsuffix .done,$(notdir $(PATCHES)))
 %.patch:
 	cp $(filter %/$@,$(PATCHES)) $@
 
-patch-%:
-	make patches/$*-$(KERNEL_VERSION).patch
-
-clean-patch-%:
-	rm -f patches/$*-$(KERNEL_VERSION).patch
-	make patches/$*-$(KERNEL_VERSION).patch
-
-patches/%-$(KERNEL_VERSION).patch: unpack.done
-	diff -Naur linux-$(KERNEL_VERSION) linux-$(KERNEL_VERSION)-$* > $@.part; exit 0
-	mv $@.part $@
-
 unpack: unpack.done
 patch: patches.done
 prepare: unpack patch EXTRAVERSION COMPLETE_VERSION