diff --git a/package.json b/package.json
index 88215f5..11c38f0 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "64",
     "napi"
   ],
-  "version": "3.0.6",
+  "version": "3.0.7",
   "license": "MIT",
   "author": "Anna Henningsen <anna@addaleax.net>",
   "maintainers": [
diff --git a/src/binding.cc b/src/binding.cc
index 7e91215..352ec7f 100644
--- a/src/binding.cc
+++ b/src/binding.cc
@@ -106,12 +106,12 @@ class InstanceData final : public RefNapi::Instance {
 
     auto it = pointer_to_orig_buffer.find(ptr);
     if (it != pointer_to_orig_buffer.end()) {
+      it->second.finalizer_count++;
       if (!it->second.ab.Value().IsEmpty()) {
         // Already have a valid entry, nothing to do.
         return;
       }
       it->second.ab.Reset(buf, 0);
-      it->second.finalizer_count++;
     } else {
       pointer_to_orig_buffer.emplace(ptr, ArrayBufferEntry {
         Reference<ArrayBuffer>::New(buf, 0),