diff --git a/packages/Webkul/BookingProduct/src/Type/Booking.php b/packages/Webkul/BookingProduct/src/Type/Booking.php
index 984e727d1..ba0ad2fe3 100644
--- a/packages/Webkul/BookingProduct/src/Type/Booking.php
+++ b/packages/Webkul/BookingProduct/src/Type/Booking.php
@@ -209,7 +209,13 @@ class Booking extends Virtual
             return false;
         }
 
-        return $options1['booking'] == $options2['booking'];
+        if (isset($options1['booking']) && isset($options2['booking'])) {
+            return $options1['booking'] === $options2['booking'];
+        } elseif (! isset($options1['booking'])) {
+            return false;
+        } elseif (! isset($options2['booking'])) {
+            return false;
+        }
     }
 
     /**
diff --git a/packages/Webkul/Product/src/Type/Bundle.php b/packages/Webkul/Product/src/Type/Bundle.php
index 53dbe56f7..595663bbd 100644
--- a/packages/Webkul/Product/src/Type/Bundle.php
+++ b/packages/Webkul/Product/src/Type/Bundle.php
@@ -496,8 +496,14 @@ class Bundle extends AbstractType
             return false;
         }
 
-        return $options1['bundle_options'] == $options2['bundle_options']
-                && $options1['bundle_option_qty'] == $this->getOptionQuantities($options2);
+        if (isset($options1['bundle_options']) && isset($options2['bundle_options'])) {
+            return $options1['bundle_options'] == $options2['bundle_options']
+                   && $options1['bundle_option_qty'] == $this->getOptionQuantities($options2);
+        } elseif (! isset($options1['bundle_options'])) {
+            return false;
+        } elseif (! isset($options2['bundle_options'])) {
+            return false;
+        }
     }
 
     /**
diff --git a/packages/Webkul/Product/src/Type/Configurable.php b/packages/Webkul/Product/src/Type/Configurable.php
index 76ca547b5..2c5c1973d 100644
--- a/packages/Webkul/Product/src/Type/Configurable.php
+++ b/packages/Webkul/Product/src/Type/Configurable.php
@@ -460,7 +460,13 @@ class Configurable extends AbstractType
             return false;
         }
 
-        return $options1['selected_configurable_option'] === $options2['selected_configurable_option'];
+        if (isset($options1['selected_configurable_option']) && isset($options2['selected_configurable_option'])) {
+            return $options1['selected_configurable_option'] === $options2['selected_configurable_option'];
+        } elseif (! isset($options1['selected_configurable_option'])) {
+            return false;
+        } elseif (! isset($options2['selected_configurable_option'])) {
+            return false;
+        }
     }
 
     /**
diff --git a/packages/Webkul/Product/src/Type/Downloadable.php b/packages/Webkul/Product/src/Type/Downloadable.php
index da0c0d992..19334bfec 100644
--- a/packages/Webkul/Product/src/Type/Downloadable.php
+++ b/packages/Webkul/Product/src/Type/Downloadable.php
@@ -188,7 +188,13 @@ class Downloadable extends AbstractType
             return false;
         }
 
-        return $options1['links'] == $options2['links'];
+        if (isset($options1['links']) && isset($options2['links'])) {
+            return $options1['links'] === $options2['links'];
+        } elseif (! isset($options1['links'])) {
+            return false;
+        } elseif (! isset($options2['links'])) {
+            return false;
+        }
     }
 
     /**