--- src/lib/libetonyek_xml.cpp
+++ src/lib/libetonyek_xml.cpp
@@ -33,7 +33,7 @@
     unsigned long bytesRead = 0;
     const unsigned char *const bytes = input->read(len, bytesRead);
 
-    std::memcpy(buffer, bytes, static_cast<int>(bytesRead));
+    if (bytesRead != 0) std::memcpy(buffer, bytes, static_cast<int>(bytesRead));
     return static_cast<int>(bytesRead);
   }
   catch (...)