diff --git a/include/IceE/Connection.h b/include/IceE/Connection.h
index 85556b3..120bc47 100755
--- a/include/IceE/Connection.h
+++ b/include/IceE/Connection.h
@@ -31,6 +31,7 @@
 #include <IceE/Thread.h> // For ThreadPerConnection.
 #include <IceE/Identity.h>
 #include <IceE/BasicStream.h>
+#include <memory>
 
 namespace IceInternal
 {
diff --git a/include/IceE/Outgoing.h b/include/IceE/Outgoing.h
index 6b7242f..4996ffb 100644
--- a/include/IceE/Outgoing.h
+++ b/include/IceE/Outgoing.h
@@ -14,6 +14,7 @@
 #include <IceE/ReferenceF.h>
 #include <IceE/BasicStream.h>
 #include <IceE/OperationMode.h>
+#include <memory>
 
 namespace Ice
 {