diff --git a/.github/workflows/s3tests.yml b/.github/workflows/s3tests.yml
index 15bf6e023..980ca20dd 100644
--- a/.github/workflows/s3tests.yml
+++ b/.github/workflows/s3tests.yml
@@ -765,7 +765,7 @@ jobs:
             sleep 2
           done
           
-          go test -v
+          MASTER_ENDPOINT="http://127.0.0.1:9336" go test -v
           kill -9 $pid || true
           # Clean up data directory
           rm -rf "$WEED_DATA_DIR" || true
diff --git a/test/s3/copying/Makefile b/test/s3/copying/Makefile
index afc510b67..ea399223f 100644
--- a/test/s3/copying/Makefile
+++ b/test/s3/copying/Makefile
@@ -13,6 +13,9 @@ ACCESS_KEY ?= some_access_key1
 SECRET_KEY ?= some_secret_key1
 VOLUME_MAX_SIZE_MB ?= 50
 
+# Let the tests force-drop collections at the master they actually run against
+export MASTER_ENDPOINT ?= http://127.0.0.1:$(MASTER_PORT)
+
 # Test directory
 TEST_DIR := $(shell pwd)
 SEAWEEDFS_ROOT := $(shell cd ../../../ && pwd)
diff --git a/test/s3/tagging/Makefile b/test/s3/tagging/Makefile
index 0ae7b1518..fbadb4ead 100644
--- a/test/s3/tagging/Makefile
+++ b/test/s3/tagging/Makefile
@@ -12,6 +12,9 @@ FILER_PORT := 8893
 TEST_TIMEOUT := 10m
 TEST_PATTERN := TestObjectTaggingOnUpload|TestPutObjectTaggingAPI|TestDeleteObjectTagging|TestTag
 
+# Let the tests force-drop collections at the master they actually run against
+export MASTER_ENDPOINT ?= http://127.0.0.1:$(MASTER_PORT)
+
 # Default target
 help:
 	@echo "S3 Object Tagging Tests Makefile"