diff --git a/contrib/docker/manifest.template b/contrib/docker/manifest.template
index 4f5aeadb..c8d2b910 100644
--- a/contrib/docker/manifest.template
+++ b/contrib/docker/manifest.template
@@ -6,7 +6,7 @@ manifests:
       os: linux
   - image: %image_name%-i386
     platform:
-      architecture: i386
+      architecture: 386
       os: linux
   - image: %image_name%-arm32v7
     platform: