diff --git a/src/unicode/ntapi_uc_unicode_validation.c b/src/unicode/ntapi_uc_unicode_validation.c
index b10f0f4..7241509 100644
--- a/src/unicode/ntapi_uc_unicode_validation.c
+++ b/src/unicode/ntapi_uc_unicode_validation.c
@@ -112,6 +112,7 @@ int32_t __stdcall __ntapi_uc_validate_unicode_stream_utf8(
 	__in	ntapi_uc_utf8_callback_fn **	callback_fn	__optional,
 	__in	nt_utf8_callback_args *		callback_args	__optional)
 {
+	int32_t			status;
 	const unsigned char *	utf8;
 	unsigned char *		ch_boundary;
 	unsigned char		byte_count;
@@ -211,7 +212,9 @@ int32_t __stdcall __ntapi_uc_validate_unicode_stream_utf8(
 		if (byte_count) {
 			(*code_points)++;
 			callback_args->byte_count = byte_count;
-			callback_fn[byte_count](callback_args);
+
+			if ((status = callback_fn[byte_count](callback_args)))
+				return status;
 		} else {
 			if (addr_failed)
 				*addr_failed = (void *)utf8;
@@ -223,7 +226,7 @@ int32_t __stdcall __ntapi_uc_validate_unicode_stream_utf8(
 	}
 
 	if ((ch < ch_boundary) && (*ch == 0))
-		callback_fn[0](callback_args);
+		return callback_fn[0](callback_args);
 
 	return NT_STATUS_SUCCESS;
 }