diff --git a/build.py b/build.py
index 852d519..9e5d4f7 100755
--- a/build.py
+++ b/build.py
@@ -741,6 +741,7 @@ def parse_args():
     args = parser.parse_args()
 
     args.stages = set(args.stages) - set(args.skip_stages)
+    args.arches = set(args.arches) - set(args.skip_arches)
     args.branches = set(args.branches) - set(args.skip_branches)
     args.images = set(args.images) - set(args.skip_images)