diff --git a/Makefile b/Makefile
index 748aa595..70af44de 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ PROJECT = cloud-game
 REPO_ROOT = github.com/giongto35
 ROOT = ${REPO_ROOT}/${PROJECT}
 
-CGO_CFLAGS='-g -O3 -funroll-loops'
+CGO_CFLAGS='-g -O3'
 CGO_LDFLAGS='-g -O3'
 GO_TAGS=static
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 491c7783..dff2c59a 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,3 @@
-version: '3'
 services:
 
   cloud-game: