diff --git a/.gitignore b/.gitignore
index 2f4dbc8..e6d0d39 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,9 @@
 vendor
 node_modules
 .idea
+.vscode
 .stignore
 .stversions
 .stfolder
 .phpunit.result.cache
+
diff --git a/src/ChoiceFieldBuilder.php b/src/ChoiceFieldBuilder.php
index 67fdf74..108a7e7 100644
--- a/src/ChoiceFieldBuilder.php
+++ b/src/ChoiceFieldBuilder.php
@@ -51,21 +51,40 @@ public function addChoices($choices)
             $choices = func_get_args();
         }
 
+        $isIndexedArray = array_keys($choices) === range(0, count($choices) - 1);
+
         foreach ($choices as $key => $value) {
-            $label = $choice = $value;
+            $parsed = $this->parseChoiceItem($key, $value, $isIndexedArray);
+            $this->addChoice($parsed[0], $parsed[1]);
+        }
+
+        return $this;
+    }
 
-            if (is_array($choice)) {
-                $label = array_values($choice)[0];
-                $choice = array_keys($choice)[0];
-            } else if (is_string($key)) {
-                $choice = $key;
-                $label = $value;
-            }
+    /**
+     * Parse a choice item to extract the choice value and label.
+     * 
+     * @param mixed $key The array key
+     * @param mixed $value The array value
+     * @param bool $isIndexedArray Whether the parent array is indexed (0, 1, 2...)
+     * @return array [$choice, $label]
+     */
+    private function parseChoiceItem($key, $value, $isIndexedArray)
+    {
+        // Handle associative array choice: ['choice' => 'label']
+        if (is_array($value)) {
+            $choice = array_keys($value)[0];
+            $label = array_values($value)[0];
+            return [$choice, $label];
+        }
 
-            $this->addChoice($choice, $label);
+        // Handle a choice without a label, use the value as both choice and label
+        if ($isIndexedArray) {
+            return [$value, $value];
         }
 
-        return $this;
+        // Handle choice array format where the key is explicitly defined
+        return [$key, $value];
     }
 
     /**
diff --git a/tests/ChoiceFieldBuilderTest.php b/tests/ChoiceFieldBuilderTest.php
index 805513d..3ef0f04 100644
--- a/tests/ChoiceFieldBuilderTest.php
+++ b/tests/ChoiceFieldBuilderTest.php
@@ -9,7 +9,8 @@
 class ChoiceFieldBuilderTest extends TestCase
 {
     use ArraySubsetAsserts;
-    
+
+
     public function testClassExists()
     {
         $this->assertTrue(class_exists('StoutLogic\AcfBuilder\ChoiceFieldBuilder'));
@@ -97,4 +98,26 @@ public function testConfigInChoicesWithLabels()
             ]
         ], $config);
     }
+
+    public function testNumericChoiceKeysWithLabels()
+    {
+        $subject = new ChoiceFieldBuilder('test_with_keys', 'radio', [
+            'choices' => [
+                1 => 'one',
+                2 => 'two',
+                5 => 'five',
+                '2.5' => '2 and a half',
+            ]
+        ]);
+
+        $config = $subject->build();
+        $this->assertArraySubset([
+            'choices' => [
+                1 => 'one',
+                2 => 'two',
+                5 => 'five',
+                '2.5' => '2 and a half',
+            ]
+        ], $config);
+    }
 }