diff --git a/core/extension/gdextension_interface.h b/core/extension/gdextension_interface.h
index e719d7337bfb..102220c0fc41 100644
--- a/core/extension/gdextension_interface.h
+++ b/core/extension/gdextension_interface.h
@@ -259,7 +259,7 @@ typedef void (*GDExtensionClassFreePropertyList)(GDExtensionClassInstancePtr p_i
 typedef GDExtensionBool (*GDExtensionClassPropertyCanRevert)(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name);
 typedef GDExtensionBool (*GDExtensionClassPropertyGetRevert)(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionVariantPtr r_ret);
 typedef void (*GDExtensionClassNotification)(GDExtensionClassInstancePtr p_instance, int32_t p_what); // Deprecated. Use GDExtensionClassNotification2 instead.
-typedef void (*GDExtensionClassNotification2)(GDExtensionClassInstancePtr p_instance, int32_t p_what, bool p_reversed);
+typedef void (*GDExtensionClassNotification2)(GDExtensionClassInstancePtr p_instance, int32_t p_what, GDExtensionBool p_reversed);
 typedef void (*GDExtensionClassToString)(GDExtensionClassInstancePtr p_instance, GDExtensionBool *r_is_valid, GDExtensionStringPtr p_out);
 typedef void (*GDExtensionClassReference)(GDExtensionClassInstancePtr p_instance);
 typedef void (*GDExtensionClassUnreference)(GDExtensionClassInstancePtr p_instance);
@@ -388,7 +388,7 @@ typedef GDExtensionBool (*GDExtensionScriptInstanceHasMethod)(GDExtensionScriptI
 
 typedef void (*GDExtensionScriptInstanceCall)(GDExtensionScriptInstanceDataPtr p_self, GDExtensionConstStringNamePtr p_method, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_argument_count, GDExtensionVariantPtr r_return, GDExtensionCallError *r_error);
 typedef void (*GDExtensionScriptInstanceNotification)(GDExtensionScriptInstanceDataPtr p_instance, int32_t p_what); // Deprecated. Use GDExtensionScriptInstanceNotification2 instead.
-typedef void (*GDExtensionScriptInstanceNotification2)(GDExtensionScriptInstanceDataPtr p_instance, int32_t p_what, bool p_reversed);
+typedef void (*GDExtensionScriptInstanceNotification2)(GDExtensionScriptInstanceDataPtr p_instance, int32_t p_what, GDExtensionBool p_reversed);
 typedef void (*GDExtensionScriptInstanceToString)(GDExtensionScriptInstanceDataPtr p_instance, GDExtensionBool *r_is_valid, GDExtensionStringPtr r_out);
 
 typedef void (*GDExtensionScriptInstanceRefCountIncremented)(GDExtensionScriptInstanceDataPtr p_instance);
diff --git a/core/object/object.cpp b/core/object/object.cpp
index 39f20a212f81..eea91b7c2e80 100644
--- a/core/object/object.cpp
+++ b/core/object/object.cpp
@@ -809,7 +809,7 @@ void Object::notification(int p_notification, bool p_reversed) {
 
 	if (_extension) {
 		if (_extension->notification2) {
-			_extension->notification2(_extension_instance, p_notification, p_reversed);
+			_extension->notification2(_extension_instance, p_notification, static_cast<GDExtensionBool>(p_reversed));
 #ifndef DISABLE_DEPRECATED
 		} else if (_extension->notification) {
 			_extension->notification(_extension_instance, p_notification);