diff --git a/src/elog.hpp b/src/elog.hpp
index d98984c..6e46b77 100644
--- a/src/elog.hpp
+++ b/src/elog.hpp
@@ -5,6 +5,7 @@
 #include <phosphor-logging/elog-errors.hpp>
 #include <phosphor-logging/elog.hpp>
 #include <sdbusplus/exception.hpp>
+#include <string>
 
 namespace phosphor
 {