diff --git a/.gitignore b/.gitignore
index 54110c9..daed047 100644
--- a/.gitignore
+++ b/.gitignore
@@ -170,3 +170,5 @@ node_modules/
 .ruff_cache/
 .env-cdk
 config.yaml
+stac-browser/
+.envrc
diff --git a/browser_config.js b/browser_config.js
index a3631f9..7d4ffe1 100644
--- a/browser_config.js
+++ b/browser_config.js
@@ -1,5 +1,4 @@
 module.exports = {
-  catalogUrl: "https://stac.eoapi.dev",
   catalogTitle: "eoAPI STAC Browser",
   allowExternalAccess: true, // Must be true if catalogUrl is not given
   allowedDomains: [],
diff --git a/infrastructure/config.py b/infrastructure/config.py
index 2ff0d3b..30ab825 100644
--- a/infrastructure/config.py
+++ b/infrastructure/config.py
@@ -153,14 +153,14 @@ def validate_model(self) -> Self:
                              and therefore `nat_gateway_count` has to be > 0."""
             )
 
-        # if (
-        #     self.stac_browser_version is not None
-        #     and self.stac_api_custom_domain is None
-        # ):
-        #     raise ValueError(
-        #         """If a STAC browser version is provided,
-        #         a custom domain must be provided for the STAC API"""
-        #     )
+        if (
+            self.stac_browser_version is not None
+            and self.stac_api_custom_domain is None
+        ):
+            raise ValueError(
+                """If a STAC browser version is provided,
+                a custom domain must be provided for the STAC API"""
+            )
 
         if self.acm_certificate_arn is None and any(
             [