diff --git a/integration_tests/models/staging/source_1/source.yml b/integration_tests/models/staging/source_1/source.yml
index 35f5eb02..dda51887 100644
--- a/integration_tests/models/staging/source_1/source.yml
+++ b/integration_tests/models/staging/source_1/source.yml
@@ -16,8 +16,7 @@ sources:
       - name: table_2
       - name: table_4
       - name: table_5
-        freshness: # default freshness
-          warn_after: null
+        freshness: null
       - name: raw_table_5
         identifier: table_5
 
diff --git a/macros/unpack/get_source_values.sql b/macros/unpack/get_source_values.sql
index 7c026dd3..00b5f5cc 100644
--- a/macros/unpack/get_source_values.sql
+++ b/macros/unpack/get_source_values.sql
@@ -24,8 +24,8 @@
               "cast(" ~ dbt_project_evaluator.is_not_empty_string(node.description) | trim ~ " as boolean)",
               "cast(" ~ node.config.enabled ~ " as boolean)",
               wrap_string_with_quotes(node.loaded_at_field | replace("'", "_")),
-              "cast(" ~ (dbt_project_evaluator.is_not_empty_string(node.freshness.warn_after.count) 
-                or dbt_project_evaluator.is_not_empty_string(node.freshness.error_after.count)) | trim ~ " as boolean)",
+              "cast(" ~ ((node.freshness != None) and (dbt_project_evaluator.is_not_empty_string(node.freshness.warn_after.count) 
+                or dbt_project_evaluator.is_not_empty_string(node.freshness.error_after.count))) | trim ~ " as boolean)",
               wrap_string_with_quotes(node.database),
               wrap_string_with_quotes(node.schema),
               wrap_string_with_quotes(node.package_name),