diff --git a/test/s3/iam/Makefile b/test/s3/iam/Makefile
index 47b26c579..b30761b81 100644
--- a/test/s3/iam/Makefile
+++ b/test/s3/iam/Makefile
@@ -11,7 +11,7 @@ LOG_LEVEL ?= 2
 S3_PORT ?= 8333
 FILER_PORT ?= 8888
 MASTER_PORT ?= 9333
-VOLUME_PORT ?= 8080
+VOLUME_PORT ?= 8081
 TEST_TIMEOUT ?= 30m
 
 # Service PIDs