diff --git a/packages/react-bootstrap-table2/src/row.js b/packages/react-bootstrap-table2/src/row.js
index 84a3ea4..e3254b5 100644
--- a/packages/react-bootstrap-table2/src/row.js
+++ b/packages/react-bootstrap-table2/src/row.js
@@ -120,7 +120,7 @@ class Row extends eventDelegater(Component) {
                 cellStyle = _.isFunction(column.style)
                   ? column.style(content, row, rowIndex, index)
                   : column.style;
-                cellStyle = cellStyle || {};
+                cellStyle = Object.assign({}, cellStyle) || {};
               }