diff --git a/macros/sql/union.sql b/macros/sql/union.sql
index ac289e2f..354ce49b 100644
--- a/macros/sql/union.sql
+++ b/macros/sql/union.sql
@@ -115,7 +115,11 @@
             from {{ relation }}
 
             {% if where -%}
-            where {{ where }}
+              {% if where is string -%}
+                where {{ where }}
+              {% else %}
+                where {{ where[loop.index0] }}
+              {%- endif %}
             {%- endif %}
         )