diff --git a/regovardump.h b/regovardump.h
index 79585e7..7f44a4f 100644
--- a/regovardump.h
+++ b/regovardump.h
@@ -143,7 +143,7 @@ class RegoReader : public Component, public CanCallbackInterface {
       // 0x09FDFFE0 - No more data available
       
       memcpy(buf_ptr, data.data(), data.size());
-      buf_ptr += data.size;
+      buf_ptr += data.size();
 
       if ((buf_ptr - buf) % 0x500 == 0)
         ESP_LOGD(TAG, "read %d", buf_ptr - buf);