diff --git a/firmware_handler.cpp b/firmware_handler.cpp
index f074bce..af61730 100644
--- a/firmware_handler.cpp
+++ b/firmware_handler.cpp
@@ -411,7 +411,16 @@
 
     lookup[session] = curr;
 
-    blobIDs.push_back(*active);
+    /* This may be them re-opening a blob, so let's only push it onto the list
+     * when appropriate.
+     */
+    auto blobIdMatch =
+        std::find_if(blobIDs.begin(), blobIDs.end(),
+                     [active](const auto& iter) { return (iter == *active); });
+    if (blobIdMatch == blobIDs.end())
+    {
+        blobIDs.push_back(*active);
+    }
 
     fileOpen = true;