diff --git a/build/docker/crossbuild.sh b/build/docker/crossbuild.sh
index 35b2fe85a..3e5e3eb04 100644
--- a/build/docker/crossbuild.sh
+++ b/build/docker/crossbuild.sh
@@ -12,7 +12,7 @@ case $GOARCH in
     export CC=x86_64-linux-musl-gcc
     ;;
 
-  i386)
+  386)
     curl -s https://musl.cc/i686-linux-musl-cross.tgz | tar xz --strip-components=1 -C /usr
     export CC=i686-linux-musl-gcc
     ;;