diff --git a/src/rpc/xmlrpc_tinyxml2.cc b/src/rpc/xmlrpc_tinyxml2.cc
index a5b9fc32..1c6bed38 100644
--- a/src/rpc/xmlrpc_tinyxml2.cc
+++ b/src/rpc/xmlrpc_tinyxml2.cc
@@ -105,7 +105,7 @@ xml_value_to_object(const tinyxml2::XMLNode* elem) {
   if (elem == nullptr) {
     throw xmlrpc_error(XMLRPC_INTERNAL_ERROR, "received null element to convert");
   }
-  if (std::strncmp(elem->Value(), "value", 5)) {
+  if (std::strncmp(elem->Value(), "value", 5) != 0) {
     throw xmlrpc_error(XMLRPC_INTERNAL_ERROR, "received non-value element to convert");
   }
   auto value_element = elem->FirstChild();