diff --git a/internal/provider/provider.go b/internal/provider/provider.go
index 9ec45dbca1..e8fed35021 100644
--- a/internal/provider/provider.go
+++ b/internal/provider/provider.go
@@ -478,7 +478,7 @@ func setDefaultValuesWithValidations(ctx context.Context, data *tfMongodbAtlasPr
 
 	if data.AccessToken.ValueString() == "" {
 		data.AccessToken = types.StringValue(MultiEnvDefaultFunc([]string{
-			"MONGODB_ATLAS_OAUTH_TOKEN",
+			"MONGODB_ATLAS_ACCESS_TOKEN",
 			"TF_VAR_OAUTH_TOKEN",
 		}, "").(string))
 	}
diff --git a/internal/provider/provider_sdk2.go b/internal/provider/provider_sdk2.go
index 47a6df2997..c330dfa3a7 100644
--- a/internal/provider/provider_sdk2.go
+++ b/internal/provider/provider_sdk2.go
@@ -453,7 +453,7 @@ func setDefaultsAndValidations(d *schema.ResourceData) diag.Diagnostics {
 	}
 
 	if err := setValueFromConfigOrEnv(d, "access_token", []string{
-		"MONGODB_ATLAS_OAUTH_TOKEN",
+		"MONGODB_ATLAS_ACCESS_TOKEN",
 		"TF_VAR_OAUTH_TOKEN",
 	}); err != nil {
 		return append(diagnostics, diag.FromErr(err)...)
diff --git a/internal/testutil/acc/pre_check.go b/internal/testutil/acc/pre_check.go
index 8d98c621b5..0bc99d38b7 100644
--- a/internal/testutil/acc/pre_check.go
+++ b/internal/testutil/acc/pre_check.go
@@ -347,7 +347,7 @@ func PreCheckAwsMsk(tb testing.TB) {
 
 func PreCheckAccessToken(tb testing.TB) {
 	tb.Helper()
-	if os.Getenv("MONGODB_ATLAS_OAUTH_TOKEN") == "" {
-		tb.Fatal("`MONGODB_ATLAS_OAUTH_TOKEN` must be set for Atlas Access Token acceptance testing")
+	if os.Getenv("MONGODB_ATLAS_ACCESS_TOKEN") == "" {
+		tb.Fatal("`MONGODB_ATLAS_ACCESS_TOKEN` must be set for Atlas Access Token acceptance testing")
 	}
 }