diff --git a/docker-socket-proxy/Dockerfile b/docker-socket-proxy/Dockerfile
index 88b4f7f..ec89133 100755
--- a/docker-socket-proxy/Dockerfile
+++ b/docker-socket-proxy/Dockerfile
@@ -51,9 +51,9 @@ RUN set -eux; \
 	mkdir /var/lib/haproxy; \
 	chown haproxy:haproxy /var/lib/haproxy
 
-ENV HAPROXY_VERSION ${HAPROXY_VERSION}
-ENV HAPROXY_URL https://www.haproxy.org/download/${HAPROXY_BRANCH}/src/haproxy-${HAPROXY_VERSION}.tar.gz
-ENV HAPROXY_SHA256 ${HAPROXY_SHA256}
+ENV HAPROXY_VERSION=${HAPROXY_VERSION}
+ENV HAPROXY_URL=https://www.haproxy.org/download/${HAPROXY_BRANCH}/src/haproxy-${HAPROXY_VERSION}.tar.gz
+ENV HAPROXY_SHA256=${HAPROXY_SHA256}
 
 RUN set -eux; \
 	\
diff --git a/docker-socket-proxy/build.yaml b/docker-socket-proxy/build.yaml
index 16113ed..2df48b3 100644
--- a/docker-socket-proxy/build.yaml
+++ b/docker-socket-proxy/build.yaml
@@ -6,5 +6,5 @@ build_from:
   i386: ghcr.io/hassio-addons/base:19.0.0
 args:
   HAPROXY_BRANCH: "3.3"
-  HAPROXY_VERSION: 3.3.O
+  HAPROXY_VERSION: 3.3.0
   HAPROXY_SHA256: bf2da6b69f82d7b855be977ab9e1d4704eef5629b657ac72afb5958a869c902e
\ No newline at end of file