diff --git a/facebook-commerce-pixel-event.php b/facebook-commerce-pixel-event.php
index 0e1ca5daf..2a78fd81b 100644
--- a/facebook-commerce-pixel-event.php
+++ b/facebook-commerce-pixel-event.php
@@ -657,15 +657,27 @@ private static function get_version_info() {
 		 * Get PixelID related settings.
 		 */
 		public static function get_options() {
-			$facebook_config = get_option( self::SETTINGS_KEY );
-			return is_array( $facebook_config ) && ! empty( $facebook_config )
-				? $facebook_config
-				: array(
-					self::PIXEL_ID_KEY     => '0',
-					self::USE_PII_KEY      => 0,
-					self::USE_S2S_KEY      => false,
-					self::ACCESS_TOKEN_KEY => '',
-				);
+
+			$default_options = array(
+				self::PIXEL_ID_KEY     => '0',
+				self::USE_PII_KEY      => 0,
+				self::USE_S2S_KEY      => false,
+				self::ACCESS_TOKEN_KEY => '',
+			);
+
+			$fb_options = get_option( self::SETTINGS_KEY );
+
+			if ( ! is_array( $fb_options ) ) {
+				$fb_options = $default_options;
+			} else {
+				foreach ( $default_options as $key => $value ) {
+					if ( ! isset( $fb_options[ $key ] ) ) {
+						$fb_options[ $key ] = $value;
+					}
+				}
+			}
+
+			return $fb_options;
 		}
 
 		/**
diff --git a/tests/Unit/FacebookCommercePixelEventTest.php b/tests/Unit/FacebookCommercePixelEventTest.php
new file mode 100644
index 000000000..23f74ee85
--- /dev/null
+++ b/tests/Unit/FacebookCommercePixelEventTest.php
@@ -0,0 +1,61 @@
+<?php
+declare( strict_types=1 );
+
+class FacebookCommercePixelTest extends WP_UnitTestCase {
+
+	/**
+	 * Unit tests for WC_Facebookcommerce_Pixel class.
+	 */
+	public function test_get_options_returns_default_options_when_no_options_exist() {
+		$expected_options = array(
+			WC_Facebookcommerce_Pixel::PIXEL_ID_KEY     => '0',
+			WC_Facebookcommerce_Pixel::USE_PII_KEY      => 0,
+			WC_Facebookcommerce_Pixel::USE_S2S_KEY      => false,
+			WC_Facebookcommerce_Pixel::ACCESS_TOKEN_KEY => '',
+		);
+
+		$actual_options = WC_Facebookcommerce_Pixel::get_options();
+
+		$this->assertEquals( $expected_options, $actual_options );
+	}
+
+	public function test_get_options_returns_merged_options_when_options_exist() {
+		$default_options = array(
+			WC_Facebookcommerce_Pixel::PIXEL_ID_KEY     => '0',
+			WC_Facebookcommerce_Pixel::USE_PII_KEY      => 0,
+			WC_Facebookcommerce_Pixel::USE_S2S_KEY      => false,
+			WC_Facebookcommerce_Pixel::ACCESS_TOKEN_KEY => '',
+		);
+
+		$existing_options = array(
+			WC_Facebookcommerce_Pixel::PIXEL_ID_KEY     => '123456789',
+			WC_Facebookcommerce_Pixel::USE_PII_KEY      => 1,
+			WC_Facebookcommerce_Pixel::USE_S2S_KEY      => true,
+			WC_Facebookcommerce_Pixel::ACCESS_TOKEN_KEY => 'abc123',
+		);
+
+		$expected_options = array_merge( $default_options, $existing_options );
+
+		update_option( WC_Facebookcommerce_Pixel::SETTINGS_KEY, $existing_options );
+
+		$actual_options = WC_Facebookcommerce_Pixel::get_options();
+
+		$this->assertEquals( $expected_options, $actual_options );
+	}
+
+	public function test_get_options_returns_default_options_when_options_are_not_an_array() {
+		update_option( WC_Facebookcommerce_Pixel::SETTINGS_KEY, 'not an array' );
+
+		$expected_options = array(
+			WC_Facebookcommerce_Pixel::PIXEL_ID_KEY     => '0',
+			WC_Facebookcommerce_Pixel::USE_PII_KEY      => 0,
+			WC_Facebookcommerce_Pixel::USE_S2S_KEY      => false,
+			WC_Facebookcommerce_Pixel::ACCESS_TOKEN_KEY => '',
+		);
+
+		$actual_options = WC_Facebookcommerce_Pixel::get_options();
+
+		$this->assertEquals( $expected_options, $actual_options );
+	}
+
+}