diff --git a/campaigns.go b/campaigns.go
index b6e1b47..5746a52 100644
--- a/campaigns.go
+++ b/campaigns.go
@@ -22,6 +22,9 @@ import (
 type campaignReq struct {
 	models.Campaign
 
+	// Indicates if the "send_at" date should be written or set to null.
+	SendLater bool `db:"-" json:"send_later"`
+
 	// This overrides Campaign.Lists to receive and
 	// write a list of int IDs during creation and updation.
 	// Campaign.Lists is JSONText for sending lists children
@@ -271,6 +274,7 @@ func handleUpdateCampaign(c echo.Context) error {
 		o.Body,
 		o.ContentType,
 		o.SendAt,
+		o.SendLater,
 		pq.StringArray(normalizeTags(o.Tags)),
 		o.TemplateID,
 		o.ListIDs)
diff --git a/frontend/src/Campaign.js b/frontend/src/Campaign.js
index a15d5d6..582aa4e 100644
--- a/frontend/src/Campaign.js
+++ b/frontend/src/Campaign.js
@@ -217,14 +217,12 @@ class TheFormDef extends React.PureComponent {
   }
 
   componentWillReceiveProps(nextProps) {
-    const has = nextProps.isSingle && nextProps.record.send_at !== null
-    if (!has) {
+    if (nextProps.record.send_at === this.props.record.send_at) {
       return
     }
-
-    if (this.state.sendLater !== has) {
-      this.setState({ sendLater: has })
-    }
+    this.setState({
+      sendLater: nextProps.isSingle && nextProps.record.send_at !== null
+    })
   }
 
   validateEmail = (rule, value, callback) => {
@@ -303,7 +301,11 @@ class TheFormDef extends React.PureComponent {
             cs.ModelCampaigns,
             cs.Routes.UpdateCampaign,
             cs.MethodPut,
-            { ...values, id: this.props.record.id }
+            {
+              ...values,
+              id: this.props.record.id,
+              send_at: !this.state.sendLater ? null : values.send_at
+            }
           )
           .then(resp => {
             notification["success"]({
@@ -511,9 +513,7 @@ class TheFormDef extends React.PureComponent {
             <Form.Item {...formItemLayout} label="Send later?">
               <Row>
                 <Col span={2}>
-                  {getFieldDecorator("send_later", {
-                    defaultChecked: this.props.isSingle
-                  })(
+                  {getFieldDecorator("send_later")(
                     <Switch
                       disabled={this.props.formDisabled}
                       checked={this.state.sendLater}
diff --git a/queries.sql b/queries.sql
index 3108f00..9c8e459 100644
--- a/queries.sql
+++ b/queries.sql
@@ -463,18 +463,18 @@ WITH camp AS (
         from_email=(CASE WHEN $4 != '' THEN $4 ELSE from_email END),
         body=(CASE WHEN $5 != '' THEN $5 ELSE body END),
         content_type=(CASE WHEN $6 != '' THEN $6::content_type ELSE content_type END),
-        send_at=(CASE WHEN $7 != '' THEN $7::TIMESTAMP WITH TIME ZONE ELSE send_at END),
-        tags=(CASE WHEN ARRAY_LENGTH($8::VARCHAR(100)[], 1) > 0 THEN $8 ELSE tags END),
-        template_id=(CASE WHEN $9 != 0 THEN $9 ELSE template_id END),
+        send_at=(CASE WHEN $8 THEN $7::TIMESTAMP WITH TIME ZONE WHEN NOT $8 THEN NULL ELSE send_at END),
+        tags=(CASE WHEN ARRAY_LENGTH($9::VARCHAR(100)[], 1) > 0 THEN $9 ELSE tags END),
+        template_id=(CASE WHEN $10 != 0 THEN $10 ELSE template_id END),
         updated_at=NOW()
     WHERE id = $1 RETURNING id
 ),
 d AS (
     -- Reset list relationships
-    DELETE FROM campaign_lists WHERE campaign_id = $1 AND NOT(list_id = ANY($10))
+    DELETE FROM campaign_lists WHERE campaign_id = $1 AND NOT(list_id = ANY($11))
 )
 INSERT INTO campaign_lists (campaign_id, list_id, list_name)
-    (SELECT $1 as campaign_id, id, name FROM lists WHERE id=ANY($10::INT[]))
+    (SELECT $1 as campaign_id, id, name FROM lists WHERE id=ANY($11::INT[]))
     ON CONFLICT (campaign_id, list_id) DO UPDATE SET list_name = EXCLUDED.list_name;
 
 -- name: update-campaign-counts