diff --git a/gdextension/gdextension_interface.h b/gdextension/gdextension_interface.h
index 3aa41f28..2a328c9a 100644
--- a/gdextension/gdextension_interface.h
+++ b/gdextension/gdextension_interface.h
@@ -195,11 +195,11 @@ typedef struct {
 	int32_t expected;
 } GDExtensionCallError;
 
-typedef void (*GDExtensionVariantFromTypeConstructorFunc)(GDExtensionVariantPtr, GDExtensionTypePtr);
-typedef void (*GDExtensionTypeFromVariantConstructorFunc)(GDExtensionTypePtr, GDExtensionVariantPtr);
+typedef void (*GDExtensionVariantFromTypeConstructorFunc)(GDExtensionUninitializedVariantPtr, GDExtensionTypePtr);
+typedef void (*GDExtensionTypeFromVariantConstructorFunc)(GDExtensionUninitializedTypePtr, GDExtensionVariantPtr);
 typedef void (*GDExtensionPtrOperatorEvaluator)(GDExtensionConstTypePtr p_left, GDExtensionConstTypePtr p_right, GDExtensionTypePtr r_result);
 typedef void (*GDExtensionPtrBuiltInMethod)(GDExtensionTypePtr p_base, const GDExtensionConstTypePtr *p_args, GDExtensionTypePtr r_return, int p_argument_count);
-typedef void (*GDExtensionPtrConstructor)(GDExtensionTypePtr p_base, const GDExtensionConstTypePtr *p_args);
+typedef void (*GDExtensionPtrConstructor)(GDExtensionUninitializedTypePtr p_base, const GDExtensionConstTypePtr *p_args);
 typedef void (*GDExtensionPtrDestructor)(GDExtensionTypePtr p_base);
 typedef void (*GDExtensionPtrSetter)(GDExtensionTypePtr p_base, GDExtensionConstTypePtr p_value);
 typedef void (*GDExtensionPtrGetter)(GDExtensionConstTypePtr p_base, GDExtensionTypePtr r_value);