diff --git a/acme4j-it/src/main/docker/challtestsrv.sh b/acme4j-it/src/main/docker/challtestsrv.sh
index a9f32eb6..41c4f5a7 100755
--- a/acme4j-it/src/main/docker/challtestsrv.sh
+++ b/acme4j-it/src/main/docker/challtestsrv.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-BAMMBAMM_IP=$(getent hosts bammbamm|cut -d' ' -f1)
+BAMMBAMM_IP=$(hostname -i)
 echo "My IP is: $BAMMBAMM_IP"
 
 /app -defaultIPv6 "" -defaultIPv4 "$BAMMBAMM_IP"