diff --git a/.gitignore b/.gitignore
index 153216e..f7dc6dd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .DS_Store
 node_modules/
 npm-debug.log
+package-lock.json
diff --git a/src/index.js b/src/index.js
index 24d7d6d..2dbee6d 100644
--- a/src/index.js
+++ b/src/index.js
@@ -105,7 +105,7 @@ export class Workbook extends Component {
       const sheetRow = []
       React.Children.forEach(columns, column => {
         const getValue = typeof(column.props.value) === 'function' ? column.props.value : row => row[column.props.value]
-        sheetRow.push(getValue(row) || '')
+        sheetRow.push(getValue(row))
       })
       sheetData.push(sheetRow)
     })