diff --git a/include/cantera/base/logger.h b/include/cantera/base/logger.h
index 0a132b734..5384e0132 100644
--- a/include/cantera/base/logger.h
+++ b/include/cantera/base/logger.h
@@ -7,7 +7,7 @@
 #define CT_LOGGER_H
 
 #include <iostream>
-
+#include <string>
 #include <cstdlib>
 
 namespace Cantera