diff --git a/assets/javascripts/discourse/components/param-input.js.es6 b/assets/javascripts/discourse/components/param-input.js.es6
index f06896f..9d0a268 100644
--- a/assets/javascripts/discourse/components/param-input.js.es6
+++ b/assets/javascripts/discourse/components/param-input.js.es6
@@ -43,7 +43,14 @@ export default Ember.Component.extend({
       this.get('params')[this.get('info.identifier')] = value.toString();
     }
     return this.get('params')[this.get('info.identifier')];
-  }.property('params', 'pname'),
+  }.property('params', 'info.identifier'),
+
+  valueBool: function(key, value, previousValue) {
+    if (arguments.length > 1) {
+      this.get('params')[this.get('info.identifier')] = (!!value).toString();
+    }
+    return this.get('params')[this.get('info.identifier')] !== 'false';
+  }.property('params', 'info.identifier'),
 
   valid: function() {
     const type = this.get('info.type'),
diff --git a/assets/javascripts/discourse/models/query.js.es6 b/assets/javascripts/discourse/models/query.js.es6
index a12f85d..51ee4ad 100644
--- a/assets/javascripts/discourse/models/query.js.es6
+++ b/assets/javascripts/discourse/models/query.js.es6
@@ -35,7 +35,10 @@ const Query = RestModel.extend({
       if (oldParams[pinfo.identifier]) {
         newParams[name] = oldParams[name];
       } else if (pinfo['default'] !== null) {
+        if (pinfo['default'] === false) { debugger; }
         newParams[name] = pinfo['default'];
+      } else if (pinfo['type'] === 'boolean') {
+        newParams[name] = 'false';
       } else {
         newParams[name] = '';
       }
diff --git a/assets/javascripts/discourse/templates/admin/components/q-params/boolean.hbs b/assets/javascripts/discourse/templates/admin/components/q-params/boolean.hbs
index fe27cf4..6031cd0 100644
--- a/assets/javascripts/discourse/templates/admin/components/q-params/boolean.hbs
+++ b/assets/javascripts/discourse/templates/admin/components/q-params/boolean.hbs
@@ -1,6 +1,6 @@
 {{#if info.nullable}}
   {{combo-box valueAttribute="id" value=value nameProperty="name" content=boolTypes}}
 {{else}}
-  {{input type="checkbox" checked=value}}
+  {{input type="checkbox" checked=valueBool}}
 {{/if}}
 <span class="param-name">{{info.identifier}}</span>
diff --git a/assets/stylesheets/explorer.scss b/assets/stylesheets/explorer.scss
index 0af683e..36516ea 100644
--- a/assets/stylesheets/explorer.scss
+++ b/assets/stylesheets/explorer.scss
@@ -171,6 +171,9 @@
     overflow-x: visible;
     .ac-wrap {
       display: inline-block;
+      input {
+        width: 100px !important; // override an inline style
+      }
     }
     input {
       width: 190px;