diff --git a/src/components/dialog/new-simulation-model.js b/src/components/dialog/new-simulation-model.js
index 33efbed..40daf9c 100644
--- a/src/components/dialog/new-simulation-model.js
+++ b/src/components/dialog/new-simulation-model.js
@@ -93,7 +93,7 @@ class NewSimulationModelDialog extends React.Component {
   resetState() {
     this.setState({
       name: '',
-      simulator: '',
+      simulator: this.props.simulators[0]._id || '',
       outputLength: '1',
       inputLength: '1',
       outputMapping: [{ name: 'Signal', type: 'Type' }],
@@ -106,16 +106,11 @@ class NewSimulationModelDialog extends React.Component {
     let name = true;
     let inputLength = true;
     let outputLength = true;
-    let simulator = true;
 
     if (this.state.name === '') {
       name = false;
     }
 
-    if (this.state.simulator === '') {
-      simulator = false;
-    }
-
     // test if simulatorid is a number (in a string, not type of number)
     if (!/^\d+$/.test(this.state.outputLength)) {
       outputLength = false;
@@ -125,13 +120,12 @@ class NewSimulationModelDialog extends React.Component {
       inputLength = false;
     }
 
-    this.valid = name && inputLength && outputLength && simulator;
+    this.valid = name && inputLength && outputLength;
 
     // return state to control
     if (target === 'name') return name ? "success" : "error";
     else if (target === 'outputLength') return outputLength ? "success" : "error";
     else if (target === 'inputLength') return inputLength ? "success" : "error";
-    else if (target === 'simulator') return simulator ? "success" : "error";
   }
 
   render() {
@@ -143,7 +137,7 @@ class NewSimulationModelDialog extends React.Component {
             <FormControl type="text" placeholder="Enter name" value={this.state.name} onChange={(e) => this.handleChange(e)} />
             <FormControl.Feedback />
           </FormGroup>
-          <FormGroup controlId="simulator" validationState={this.validateForm('simulator')}>
+          <FormGroup controlId="simulator">
             <ControlLabel>Simulator</ControlLabel>
             <FormControl componentClass="select" placeholder="Select simulator" value={this.state.simulator} onChange={(e) => this.handleChange(e)}>
               {this.props.simulators.map(simulator => (