diff --git a/client/app/components/ParameterMappingInput.jsx b/client/app/components/ParameterMappingInput.jsx
index eeb343df2c..16c2d8a967 100644
--- a/client/app/components/ParameterMappingInput.jsx
+++ b/client/app/components/ParameterMappingInput.jsx
@@ -404,6 +404,7 @@ class Title extends React.Component {
           placeholder={paramTitle}
           onChange={this.onTitleChange}
           onPressEnter={this.save}
+          maxLength={100}
           autoFocus
         />
         <Button size="small" type="dashed" onClick={this.hide}>