diff --git a/source/oar.cpp b/source/oar.cpp
index 63c8312..332fbb3 100644
--- a/source/oar.cpp
+++ b/source/oar.cpp
@@ -82,9 +82,8 @@ export namespace oar {
 
 			header const * const archive_header{reinterpret_cast<header const *>(archive_header_buffer)};
 
-			if (!coral::equals(coral::slice{archive_header->signature_magic,
-				signature_identifier_length}, coral::slice{signature_magic,
-				signature_identifier_length})) return open_result::archive_invalid;
+			if (!coral::equals({archive_header->signature_magic, signature_identifier_length},
+				{signature_magic, signature_identifier_length})) return open_result::archive_invalid;
 
 			if (archive_header->signature_magic[signature_identifier_length] !=
 				signature_magic[signature_identifier_length]) return open_result::archive_unsupported;