diff --git a/Dockerfile b/Dockerfile
index dac993f..300d78a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@ RUN cd /tmp && \
     apt install -y git ca-certificates gcc libc6-dev liblua5.3-dev libpcre3-dev libssl-dev libsystemd-dev make wget zlib1g-dev && \
     git clone https://github.com/haproxy/haproxy.git && \
     cd haproxy && \
-    make TARGET=linux-glibc USE_LUA=1 USE_OPENSSL=1 USE_PCRE=1 USE_ZLIB=1 USE_SYSTEMD=1 EXTRA_OBJS="contrib/prometheus-exporter/service-prometheus.o" && \
+    make TARGET=linux-glibc USE_LUA=1 USE_OPENSSL=1 USE_PCRE=1 USE_ZLIB=1 USE_SYSTEMD=1 EXTRA_OBJS="addons/promex/service-prometheus.o" && \
     make install-bin && \
     cp /usr/local/sbin/haproxy /usr/sbin/haproxy && \
     cd / && rm -rf /tmp/haproxy