diff --git a/src/keepa/interface.py b/src/keepa/interface.py
index 2b14448..65cd22c 100644
--- a/src/keepa/interface.py
+++ b/src/keepa/interface.py
@@ -44,8 +44,8 @@ def wrapper(target):
 
 # domain codes
 # Valid values: [ 1: com | 2: co.uk | 3: de | 4: fr | 5:
-#                 co.jp | 6: ca | 7: cn | 8: it | 9: es | 10: in | 11: com.mx ]
-DCODES = ["RESERVED", "US", "GB", "DE", "FR", "JP", "CA", "CN", "IT", "ES", "IN", "MX"]
+#                 co.jp | 6: ca | 7: cn | 8: it | 9: es | 10: in | 11: com.mx | 12: com.br ]
+DCODES = ["RESERVED", "US", "GB", "DE", "FR", "JP", "CA", "CN", "IT", "ES", "IN", "MX", "BR"]
 
 # csv indices. used when parsing csv and stats fields.
 # https://github.com/keepacom/api_backend
@@ -506,9 +506,9 @@ def query(
             timestamps (unix epoch time milliseconds) or two date
             strings (ISO8601, with or without time in UTC).
 
-        domain : str, optional
+        domain : str, default: "US"
             One of the following Amazon domains: RESERVED, US, GB, DE,
-            FR, JP, CA, CN, IT, ES, IN, MX Defaults to US.
+            FR, JP, CA, CN, IT, ES, IN, MX, BR.
 
         offers : int, optional
             Adds available offers to product data. Default 0.  Must be between
@@ -886,7 +886,7 @@ def _product_query(self, items, product_code_is_asin=True, **kwargs):
 
         domain : str
             One of the following Amazon domains:
-            RESERVED, US, GB, DE, FR, JP, CA, CN, IT, ES, IN, MX
+            RESERVED, US, GB, DE, FR, JP, CA, CN, IT, ES, IN, MX, BR.
 
         offers : bool, optional
             Adds product offers to product data.
@@ -1022,10 +1022,9 @@ def best_sellers_query(self, category, rank_avg_range=0, domain="US", wait=True)
             the best sellers list for. You can find category node ids
             via the category search "search_for_categories".
 
-        domain : str
-            Amazon locale you want to access. Must be one of the following
-            RESERVED, US, GB, DE, FR, JP, CA, CN, IT, ES, IN, MX
-            Default US.
+        domain : str, default: "US"
+            Amazon locale you want to access. Must be one of the following:
+            RESERVED, US, GB, DE, FR, JP, CA, CN, IT, ES, IN, MX, BR.
 
         wait : bool, optional
             Wait available token before doing effective query.
@@ -1078,7 +1077,10 @@ def best_sellers_query(self, category, rank_avg_range=0, domain="US", wait=True)
         ...
 
         """
-        assert domain in DCODES, "Invalid domain code"
+        if domain not in DCODES:
+            raise ValueError(
+                f"Invalid domain code {domain}. Should be one of the following:\n{DCODES}"
+            )
 
         payload = {
             "key": self.accesskey,
@@ -1101,10 +1103,9 @@ def search_for_categories(self, searchterm, domain="US", wait=True) -> list:
         searchterm : str
             Input search term.
 
-        domain : str, default: 'US'
-            Amazon locale you want to access. Must be one of the following
-            RESERVED, US, GB, DE, FR, JP, CA, CN, IT, ES, IN, MX
-            Default US.
+        domain : str, default: "US"
+            Amazon locale you want to access. Must be one of the following:
+            RESERVED, US, GB, DE, FR, JP, CA, CN, IT, ES, IN, MX, BR.
 
         wait : bool, default: True
             Wait available token before doing effective query.
@@ -1137,7 +1138,10 @@ def search_for_categories(self, searchterm, domain="US", wait=True) -> list:
         144 Science Fiction & Fantasy
 
         """
-        assert domain in DCODES, "Invalid domain code"
+        if domain not in DCODES:
+            raise ValueError(
+                f"Invalid domain code {domain}. Should be one of the following:\n{DCODES}"
+            )
 
         payload = {
             "key": self.accesskey,
@@ -1163,9 +1167,8 @@ def category_lookup(self, category_id, domain="US", include_parents=False, wait=
             categories.
 
         domain : str, default: "US"
-            Amazon locale you want to access. Must be one of the following
-            RESERVED, US, GB, DE, FR, JP, CA, CN, IT, ES, IN, MX
-            Default US
+            Amazon locale you want to access. Must be one of the following:
+            RESERVED, US, GB, DE, FR, JP, CA, CN, IT, ES, IN, MX, BR.
 
         include_parents : bool, default: False
             Include parents.
@@ -1212,7 +1215,9 @@ def category_lookup(self, category_id, domain="US", include_parents=False, wait=
 
         """
         if domain not in DCODES:
-            raise ValueError("Invalid domain code")
+            raise ValueError(
+                f"Invalid domain code {domain}. Should be one of the following:\n{DCODES}"
+            )
 
         payload = {
             "key": self.accesskey,
@@ -2885,7 +2890,10 @@ async def _product_query(self, items, product_code_is_asin=True, **kwargs):
     @is_documented_by(Keepa.best_sellers_query)
     async def best_sellers_query(self, category, rank_avg_range=0, domain="US", wait=True):
         """Documented by Keepa.best_sellers_query."""
-        assert domain in DCODES, "Invalid domain code"
+        if domain not in DCODES:
+            raise ValueError(
+                f"Invalid domain code {domain}. Should be one of the following:\n{DCODES}"
+            )
 
         payload = {
             "key": self.accesskey,
@@ -2903,7 +2911,10 @@ async def best_sellers_query(self, category, rank_avg_range=0, domain="US", wait
     @is_documented_by(Keepa.search_for_categories)
     async def search_for_categories(self, searchterm, domain="US", wait=True):
         """Documented by Keepa.search_for_categories."""
-        assert domain in DCODES, "Invalid domain code"
+        if domain not in DCODES:
+            raise ValueError(
+                f"Invalid domain code {domain}. Should be one of the following:\n{DCODES}"
+            )
 
         payload = {
             "key": self.accesskey,
@@ -2923,7 +2934,10 @@ async def search_for_categories(self, searchterm, domain="US", wait=True):
     @is_documented_by(Keepa.category_lookup)
     async def category_lookup(self, category_id, domain="US", include_parents=0, wait=True):
         """Documented by Keepa.category_lookup."""
-        assert domain in DCODES, "Invalid domain code"
+        if domain not in DCODES:
+            raise ValueError(
+                f"Invalid domain code {domain}. Should be one of the following:\n{DCODES}"
+            )
 
         payload = {
             "key": self.accesskey,
diff --git a/tests/test_interface.py b/tests/test_interface.py
index e93e1f3..0e96ddd 100644
--- a/tests/test_interface.py
+++ b/tests/test_interface.py
@@ -311,9 +311,10 @@ def test_productquery_offers_multiple(api):
 
 
 def test_domain(api):
-    request = api.query(PRODUCT_ASIN, history=False, domain="DE")
+    asin = "0394800028"
+    request = api.query(asin, history=False, domain="BR")
     product = request[0]
-    assert product["asin"] == PRODUCT_ASIN
+    assert product["asin"] == asin
 
 
 def test_invalid_domain(api):