diff --git a/tools/azure-sdk-tools/devtools_testutils/config.py b/tools/azure-sdk-tools/devtools_testutils/config.py
index 9ad178e9be6e..d3115350d81a 100644
--- a/tools/azure-sdk-tools/devtools_testutils/config.py
+++ b/tools/azure-sdk-tools/devtools_testutils/config.py
@@ -5,5 +5,5 @@
 # --------------------------------------------------------------------------
 import os
 
-PROXY_URL = os.getenv("PROXY_URL", "https://localhost:5001")
+PROXY_URL = os.getenv("PROXY_URL", "https://localhost:5001").rstrip("/")
 TEST_SETTING_FILENAME = "testsettings_local.cfg"
diff --git a/tools/azure-sdk-tools/devtools_testutils/proxy_startup.py b/tools/azure-sdk-tools/devtools_testutils/proxy_startup.py
index 4bda8fe0ac25..b34e9d0eaf9d 100644
--- a/tools/azure-sdk-tools/devtools_testutils/proxy_startup.py
+++ b/tools/azure-sdk-tools/devtools_testutils/proxy_startup.py
@@ -28,7 +28,7 @@
 CONTAINER_STARTUP_TIMEOUT = 6000
 PROXY_MANUALLY_STARTED = os.getenv("PROXY_MANUAL_START", False)
 
-PROXY_CHECK_URL = PROXY_URL.rstrip("/") + "/Info/Available"
+PROXY_CHECK_URL = PROXY_URL + "/Info/Available"
 TOOL_ENV_VAR = "PROXY_PID"