diff --git a/components/engine/Dockerfile b/components/engine/Dockerfile
index 7c4a8608db..8bc546bd9a 100644
--- a/components/engine/Dockerfile
+++ b/components/engine/Dockerfile
@@ -72,8 +72,8 @@ RUN set -x \
 	&& (cd "$GOPATH/src/github.com/docker/distribution" && git checkout -q "$REGISTRY_COMMIT") \
 	&& GOPATH="$GOPATH/src/github.com/docker/distribution/Godeps/_workspace:$GOPATH" \
 		go build -buildmode=pie -o /usr/local/bin/registry-v2 github.com/docker/distribution/cmd/registry \
-	&& case $(uname -m) in \
-		x86_64|ppc64le|s390x) \
+	&& case $(dpkg --print-architecture) in \
+		amd64|ppc64*|s390x) \
 		(cd "$GOPATH/src/github.com/docker/distribution" && git checkout -q "$REGISTRY_COMMIT_SCHEMA1"); \
 		GOPATH="$GOPATH/src/github.com/docker/distribution/Godeps/_workspace:$GOPATH"; \
 			go build -buildmode=pie -o /usr/local/bin/registry-v2-schema1 github.com/docker/distribution/cmd/registry; \