diff --git a/Makefile b/Makefile
index feca34c26145a8eb3b354cedf2e311fb1061279e..e8ace82e334f2ad56f73ade1a4b9126ed2a270a2 100644
--- a/Makefile
+++ b/Makefile
@@ -1351,7 +1351,7 @@ define find-sources
 	  find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
 	       -name $1 -print; \
 	  find $(__srctree) $(RCS_FIND_IGNORE) \
-	       \( -name include -o -name arch \) -prune -o \
+	       \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \
 	       -name $1 -print; \
 	  )
 endef