diff --git a/Makefile b/Makefile
index 8294cd73b3aa7a5be61a6e77df33cc0f6f781c4b..206b2833ee6baccf34a34b469fd54a621a3f486f 100644
--- a/Makefile
+++ b/Makefile
@@ -1159,19 +1159,25 @@ else
 __srctree = $(srctree)/
 endif
 
+ALLSOURCE_ARCHS := $(ARCH)
+
 define all-sources
 	( find $(__srctree) $(RCS_FIND_IGNORE) \
 	       \( -name include -o -name arch \) -prune -o \
 	       -name '*.[chS]' -print; \
-	  find $(__srctree)arch/$(ARCH) $(RCS_FIND_IGNORE) \
-	       -name '*.[chS]' -print; \
+	  for ARCH in $(ALLSOURCE_ARCHS) ; do \
+	       find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
+	            -name '*.[chS]' -print; \
+	  done ; \
 	  find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
 	       -name '*.[chS]' -print; \
 	  find $(__srctree)include $(RCS_FIND_IGNORE) \
 	       \( -name config -o -name 'asm-*' \) -prune \
 	       -o -name '*.[chS]' -print; \
-	  find $(__srctree)include/asm-$(ARCH) $(RCS_FIND_IGNORE) \
-	       -name '*.[chS]' -print; \
+	  for ARCH in $(ALLSOURCE_ARCHS) ; do \
+	       find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
+	            -name '*.[chS]' -print; \
+	  done ; \
 	  find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
 	       -name '*.[chS]' -print )
 endef