diff --git a/code_thingies/dbtlearn/macros/positive_value.sql b/code_thingies/dbtlearn/macros/positive_value.sql
new file mode 100644
index 0000000..148a7bc
--- /dev/null
+++ b/code_thingies/dbtlearn/macros/positive_value.sql
@@ -0,0 +1,8 @@
+{% test positive_value(model, column_name) %}
+SELECT
+    *
+FROM
+    {{ model }}
+WHERE
+    {{ column_name }} < 1
+{% endtest %}
\ No newline at end of file
diff --git a/code_thingies/dbtlearn/models/dim/dim_listings_cleansed.sql b/code_thingies/dbtlearn/models/dim/dim_listings_cleansed.sql
index c3371aa..de68ced 100644
--- a/code_thingies/dbtlearn/models/dim/dim_listings_cleansed.sql
+++ b/code_thingies/dbtlearn/models/dim/dim_listings_cleansed.sql
@@ -16,7 +16,7 @@ SELECT
     CASE
         WHEN minimum_nights = 0 THEN 1
         ELSE minimum_nights
-    END AS mininum_nights,
+    END AS minimum_nights,
     host_id,
     REPLACE(price_str,'$','')::money AS price,
     created_at,
diff --git a/code_thingies/dbtlearn/models/dim/dim_listings_with_hosts.sql b/code_thingies/dbtlearn/models/dim/dim_listings_with_hosts.sql
index ee05cc2..6ccf1f0 100644
--- a/code_thingies/dbtlearn/models/dim/dim_listings_with_hosts.sql
+++ b/code_thingies/dbtlearn/models/dim/dim_listings_with_hosts.sql
@@ -13,7 +13,7 @@ SELECT
     listings.listing_id,
     listings.listing_name,
     listings.room_type,
-    listings.mininum_nights,
+    listings.minimum_nights,
     listings.price,
     listings.host_id,
     hosts.host_name,
diff --git a/code_thingies/dbtlearn/models/schema.yml b/code_thingies/dbtlearn/models/schema.yml
index b1f9258..cefd2d4 100644
--- a/code_thingies/dbtlearn/models/schema.yml
+++ b/code_thingies/dbtlearn/models/schema.yml
@@ -25,3 +25,7 @@ models:
                 'Hotel room'
               ]
 
+      - name: minimum_nights
+        tests:
+          - positive_value
+
diff --git a/code_thingies/dbtlearn/tests/dim_listings_minimum_nights.sql b/code_thingies/dbtlearn/tests/dim_listings_minimum_nights.sql
deleted file mode 100644
index 8dfaa20..0000000
--- a/code_thingies/dbtlearn/tests/dim_listings_minimum_nights.sql
+++ /dev/null
@@ -1,5 +0,0 @@
-SELECT *
-FROM
-    {{ ref('dim_listings_cleansed') }}
-WHERE
-    mininum_nights < 1