diff --git a/src/asar/platform/linux/file-helpers-linux.cpp b/src/asar/platform/linux/file-helpers-linux.cpp
index a31df8be..e3e386e8 100644
--- a/src/asar/platform/linux/file-helpers-linux.cpp
+++ b/src/asar/platform/linux/file-helpers-linux.cpp
@@ -56,6 +56,8 @@ FileHandleType open_file(const char* path, FileOpenMode mode, FileOpenError* err
 	case FileOpenMode_Write:
 		open_mode = "wb";
 		break;
+	default:
+		__builtin_unreachable();
 	}
 
 	out_handle = fopen(path, open_mode);