diff --git a/setup-scripts/blocklist-airtable.py b/setup-scripts/blocklist-airtable.py
index d5bd360e..d0279e5f 100755
--- a/setup-scripts/blocklist-airtable.py
+++ b/setup-scripts/blocklist-airtable.py
@@ -15,16 +15,15 @@ import json
 setup()
 
 
-# Check and load Airtable environment variables
-airtable_env_vars = ["AIRTABLE_API_KEY", "AIRTABLE_BASE", "AIRTABLE_TABLE", "AIRTABLE_FIELD"]
+AIRTABLE_API_KEY = os.getenv("AIRTABLE_API_KEY")
+AIRTABLE_BASE = os.getenv("AIRTABLE_BASE")
+AIRTABLE_TABLE = os.getenv("AIRTABLE_TABLE")
+AIRTABLE_FIELD = os.getenv("AIRTABLE_FIELD")
 
-for e in airtable_env_vars:
-    # Check environment variable is defined
-    gete = os.getenv(e)
-    if not gete:
-        sys.exit("Configuration error: Environment variable " + e + " is not defined")
-    # Set variable
-    exec(e + " = \"" + gete + "\"")
+# Check environment variables are defined
+for e in [AIRTABLE_API_KEY, AIRTABLE_BASE, AIRTABLE_TABLE, AIRTABLE_FIELD]
+    if not e:
+        sys.exit("Configuration error: Missing AirTable environment variable.")
 
 
 async def run_checks():