diff --git a/test/images/serve-hostname/README.md b/test/images/serve-hostname/README.md
index a4647ff95fd..4396a26888f 100644
--- a/test/images/serve-hostname/README.md
+++ b/test/images/serve-hostname/README.md
@@ -2,7 +2,7 @@
 
 This is a small util app to serve your hostname on TCP and/or UDP.  Useful for testing.
 
-The `serve_hostname` Makefile supports multiple architectures, which means it may cross-compile and build an docker image easily.
+The `serve_hostname` Makefile supports multiple architectures, which means it may cross-compile and build a docker image easily.
 Arch-specific busybox images serve as base images.
 
 If you are releasing a new version, please bump the `TAG` value in the `Makefile` before building the images.