diff --git a/atst/app.py b/atst/app.py
index aa6a8158..e882c5cc 100644
--- a/atst/app.py
+++ b/atst/app.py
@@ -115,9 +115,8 @@ def make_config():
     config.read(config_files)
 
     # Check for ENV variables as a final source of overrides
-    # ENV vars must be named "ATST_<KEYNAME>"
     for confsetting in config.options("default"):
-        env_override = os.getenv("ATST_" + confsetting.upper())
+        env_override = os.getenv(confsetting.upper())
         if env_override:
             config.set("default", confsetting, env_override)