diff --git a/src/xrpld/app/main/Application.cpp b/src/xrpld/app/main/Application.cpp
index cad96f382b..29fb2dd0e9 100644
--- a/src/xrpld/app/main/Application.cpp
+++ b/src/xrpld/app/main/Application.cpp
@@ -79,6 +79,7 @@
 #include <xrpl/protocol/BuildInfo.h>
 #include <xrpl/protocol/Feature.h>
 #include <xrpl/protocol/Protocol.h>
+#include <xrpl/protocol/PublicKey.h>
 #include <xrpl/protocol/STParsedJSON.h>
 #include <xrpl/protocol/Serializer.h>
 #include <xrpl/protocol/jss.h>