diff --git a/crates/polars-io/src/cloud/options.rs b/crates/polars-io/src/cloud/options.rs
index e1a0ffe4e49..6ddb262d144 100644
--- a/crates/polars-io/src/cloud/options.rs
+++ b/crates/polars-io/src/cloud/options.rs
@@ -471,7 +471,7 @@ impl CloudOptions {
             return Ok(store);
         }
 
-        let cfg_use_account_key = std::env::var("POLARS_ALLOW_AZURE_ACCOUNT_KEY");
+        let cfg_use_account_key = std::env::var("POLARS_AUTO_AZURE_ACCOUNT_KEY");
         let cfg_use_account_key = cfg_use_account_key.as_deref();
 
         if verbose {
@@ -492,15 +492,15 @@ impl CloudOptions {
 [CloudOptions::build_azure]: Warning: Azure authentication check failed, subsequent cloud \
 operations may return an error. Note that polars was able to retrieve the storage account \
 key for this URL from the Azure CLI - to allow polars to automatically use storage account \
-keys for authentication, set POLARS_ALLOW_AZURE_ACCOUNT_KEY=1 in the environment. To silence \
-this warning, set POLARS_ALLOW_AZURE_ACCOUNT_KEY=0.
+keys for authentication, set POLARS_AUTO_AZURE_ACCOUNT_KEY=1 in the environment. To silence \
+this warning, set POLARS_AUTO_AZURE_ACCOUNT_KEY=0.
 "
                     )
                 });
             } else if verbose {
                 eprintln!(
                     "[CloudOptions::build_azure]: Storage account key authentication disabled \
-                    (POLARS_ALLOW_AZURE_ACCOUNT_KEY=0)"
+                    (POLARS_AUTO_AZURE_ACCOUNT_KEY=0)"
                 );
             }