diff --git a/src/Functions/pointInPolygon.cpp b/src/Functions/pointInPolygon.cpp
index 0ad40abdaf2..87081f08e38 100644
--- a/src/Functions/pointInPolygon.cpp
+++ b/src/Functions/pointInPolygon.cpp
@@ -341,6 +341,8 @@ private:
             if (!is_valid)
                 throw Exception("Polygon is not valid: " + failure_message, ErrorCodes::BAD_ARGUMENTS);
         }
+#else
+        (void)validate_polygon;
 #endif
     }
 };