diff --git a/src/ConditionalBuilder.php b/src/ConditionalBuilder.php
index 147d5e7..59b4a60 100644
--- a/src/ConditionalBuilder.php
+++ b/src/ConditionalBuilder.php
@@ -18,9 +18,9 @@ class ConditionalBuilder extends ParentDelegationBuilder
      * Creates the first rule. Additional rules can be chained use `or` and `and`
      * @param string $name
      * @param string $operator
-     * @param string $value
+     * @param string|null $value
      */
-    public function __construct($name, $operator, $value)
+    public function __construct($name, $operator, $value = null)
     {
         $this->and($name, $operator, $value);
     }
@@ -38,10 +38,10 @@ public function build()
      * Creates an AND condition
      * @param  string $name
      * @param  string $operator
-     * @param  string $value
+     * @param  string|null $value
      * @return $this
      */
-    public function andCondition($name, $operator, $value)
+    public function andCondition($name, $operator, $value = null)
     {
         $orCondition = $this->popOrCondition();
         $orCondition[] = $this->createCondition($name, $operator, $value);
@@ -54,10 +54,10 @@ public function andCondition($name, $operator, $value)
      * Creates an OR condition
      * @param  string $name
      * @param  string $operator
-     * @param  string $value
+     * @param  string|null $value
      * @return $this
      */
-    public function orCondition($name, $operator, $value)
+    public function orCondition($name, $operator, $value = null)
     {
         $condition = $this->createCondition($name, $operator, $value);
         $this->pushOrCondition([$condition]);
@@ -69,16 +69,16 @@ public function orCondition($name, $operator, $value)
      * Creates a condition
      * @param  string $name
      * @param  string $operator
-     * @param  string $value
+     * @param  string|null $value
      * @return array
      */
-    protected function createCondition($name, $operator, $value)
+    protected function createCondition($name, $operator, $value = null)
     {
-        return [
+        return array_filter([
             'field' => $name,
             'operator' => $operator,
             'value' => $value,
-        ];
+        ], fn($value) => $value !== null);
     }
 
     /**
diff --git a/src/LocationBuilder.php b/src/LocationBuilder.php
index b58659d..4d2d626 100644
--- a/src/LocationBuilder.php
+++ b/src/LocationBuilder.php
@@ -14,8 +14,12 @@ class LocationBuilder extends ConditionalBuilder
      * @param  string $value
      * @return array
      */
-    protected function createCondition($name, $operator, $value)
+    protected function createCondition($name, $operator, $value = '')
     {
+        if ($value === '') {
+            throw new \InvalidArgumentException('Value is required for location conditions');
+        }
+
         return [
             'param' => $name,
             'operator' => $operator,
diff --git a/tests/ConditionalBuilderTest.php b/tests/ConditionalBuilderTest.php
index 39c217c..4c328d2 100644
--- a/tests/ConditionalBuilderTest.php
+++ b/tests/ConditionalBuilderTest.php
@@ -9,7 +9,7 @@
 class ConditionalBuilderTest extends TestCase
 {
     use ArraySubsetAsserts;
-    
+
     public function testContionalLogic()
     {
         $builder = new ConditionalBuilder('color', '==', 'other');
@@ -27,6 +27,22 @@ public function testContionalLogic()
         $this->assertArraySubset($expectedConfig, $builder->build());
     }
 
+    public function testContionalLogicOperatorOnly()
+    {
+        $builder = new ConditionalBuilder('color', '!=empty');
+
+        $expectedConfig = [
+            [
+                [
+                    'field' => 'color',
+                    'operator'  =>  '!=empty',
+                ],
+            ]
+        ];
+
+        $this->assertSame($expectedConfig, $builder->build());
+    }
+
     public function testAnd()
     {
         $builder = new ConditionalBuilder('color', '==', 'other');
@@ -86,4 +102,4 @@ public function testOr()
 
         $this->assertArraySubset($expectedConfig, $builder->build());
     }
-}
\ No newline at end of file
+}