diff --git a/src/transaction.cc b/src/transaction.cc
index 96f9c21b..eba7b6fb 100644
--- a/src/transaction.cc
+++ b/src/transaction.cc
@@ -522,7 +522,7 @@ int Transaction::processURI(const char *uri, const char *method,
     if (!m_uri_decoded.empty() && m_uri_decoded.at(0) != '/') {
         bool fullDomain = true;
         size_t scheme = m_uri_decoded.find(":")+1;
-        if (scheme == std::string::npos) {
+        if (scheme == std::string::npos) { //impossible case, for +1 in size_t scheme = m_uri_decoded.find(":")+1
             fullDomain = false;
         }
         // Searching with a pos of -1 is undefined we also shortcut