diff --git a/dbt/include/sqlserver/macros/utils/concat.sql b/dbt/include/sqlserver/macros/utils/concat.sql
index 705e7f56..2ebfa889 100644
--- a/dbt/include/sqlserver/macros/utils/concat.sql
+++ b/dbt/include/sqlserver/macros/utils/concat.sql
@@ -1,3 +1,3 @@
 {% macro sqlserver__concat(fields) -%}
-    concat({{ fields|join(', ') }})
+    concat('', {{ fields|join(', ') }})
 {%- endmacro %}