diff --git a/src/firmware-update.cpp b/src/firmware-update.cpp
index d27b8c6..809b87a 100644
--- a/src/firmware-update.cpp
+++ b/src/firmware-update.cpp
@@ -273,8 +273,12 @@
     {
         std::error_code ec;
         size_t sz = std::filesystem::file_size(fname, ec);
+        if (!ec)
+        {
+            return;
+        }
         int fd = open(fname.c_str(), O_RDONLY);
-        if (!ec || fd < 0)
+        if (fd < 0)
         {
             return;
         }