diff --git a/x-pack/metricbeat/module/sql/query/test_sql_mssql.py b/x-pack/metricbeat/module/sql/query/test_sql_mssql.py
index 368a1b7c59a..24b6804413f 100644
--- a/x-pack/metricbeat/module/sql/query/test_sql_mssql.py
+++ b/x-pack/metricbeat/module/sql/query/test_sql_mssql.py
@@ -11,23 +11,23 @@ class Test(XPackTest):
     @unittest.skipUnless(metricbeat.INTEGRATION_TESTS, "integration test")
     def test_query_without_fetch_from_all_databases(self):
         """
-        SQL MSSQL custom query with fetch_from_all_databases="false"
+        SQL MSSQL custom query with fetch_from_all_databases=false
         
         1 document will be received from the default selected database: 'master'.
         """
-        self.run_query_test(fetch_from_all_databases="false", expected_output_count=1)
+        self.run_query_test(fetch_from_all_databases=False, expected_output_count=1)
 
     @unittest.skipUnless(metricbeat.INTEGRATION_TESTS, "integration test")
     def test_query_with_fetch_from_all_databases(self):
         """
-        SQL MSSQL custom query with fetch_from_all_databases="true"
+        SQL MSSQL custom query with fetch_from_all_databases=true
         
         4 documents will be received because 4 databases are present by default in MSSQL and 1 document per database will received.
         """
-        self.run_query_test(fetch_from_all_databases="true", expected_output_count=4)
+        self.run_query_test(fetch_from_all_databases=True, expected_output_count=4)
 
 
-    def run_query_test(self, fetch_from_all_databases: str, expected_output_count: int) -> list:
+    def run_query_test(self, fetch_from_all_databases: bool, expected_output_count: int) -> list:
         self.render_config_template(modules=[{
             "name": "sql",
             "metricsets": ["query"],
@@ -35,7 +35,7 @@ def run_query_test(self, fetch_from_all_databases: str, expected_output_count: i
             "period": "5s",
             "additional_content": f"""
   driver: mssql
-  fetch_from_all_databases: {fetch_from_all_databases}
+  fetch_from_all_databases: {str(fetch_from_all_databases).lower()}
   sql_query: SELECT DB_NAME() AS 'database_name';
   sql_response_format: table"""
         }])