diff --git a/errors.cpp b/errors.cpp
index 9dbbaf0..ed23ffe 100644
--- a/errors.cpp
+++ b/errors.cpp
@@ -25,7 +25,7 @@
 void InterfaceError::log() const
 {
     logging::log<logging::level::ERR>(
-        what(), phosphor::logging::entry("INTERFACE=%s", interface));
+        what(), phosphor::logging::entry("INTERFACE=%s", interface.c_str()));
 }
 } // namespace manager
 } // namespace inventory