diff --git a/firmware_handler.hpp b/firmware_handler.hpp
index 6aae5b6..1f7032b 100644
--- a/firmware_handler.hpp
+++ b/firmware_handler.hpp
@@ -168,9 +168,9 @@
   private:
     void addBlobId(const std::string& blob)
     {
-        auto blobIdMatch =
-            std::find_if(blobIDs.begin(), blobIDs.end(),
-                         [&blob](const auto& iter) { return (iter == blob); });
+        auto blobIdMatch = std::find_if(
+            blobIDs.begin(), blobIDs.end(),
+            [&blob](const std::string& iter) { return (iter == blob); });
         if (blobIdMatch == blobIDs.end())
         {
             blobIDs.push_back(blob);