diff --git a/test/images/agnhost/Dockerfile b/test/images/agnhost/Dockerfile
index ef1c16477bd..6d0bbe04d81 100644
--- a/test/images/agnhost/Dockerfile
+++ b/test/images/agnhost/Dockerfile
@@ -57,11 +57,11 @@ RUN ln -s agnhost agnhost-2
 
 # this user and group is used in a E2E test case of 
 # SupplementalGroups with pre-defined group in the image
-# - image-user(uid=1000)
-# - image-user belongs to group-defined-in-image(gid=50000)
-RUN adduser -u 1000 -D image-user && \
+# - user-defined-in-image(uid=1000)
+# - user-defined-in-image belongs to group-defined-in-image(gid=50000)
+RUN adduser -u 1000 -D user-defined-in-image && \
     addgroup -g 50000 group-defined-in-image && \
-    addgroup image-user group-defined-in-image
+    addgroup user-defined-in-image group-defined-in-image
 
 ENTRYPOINT ["/agnhost"]
 CMD ["pause"]