2 files changed, 4 insertions, 0 deletions

diff --git a/lib/fields.cc b/lib/fields.cc
index d494098..91fbc41 100644
--- a/lib/fields.cc
+++ b/lib/fields.cc
@@ -3,4 +3,6 @@
 #include <opkele/util.h>
+#include <algorithm>
 
 namespace opkele {
+    using std::for_each;
     using std::unary_function;
diff --git a/lib/message.cc b/lib/message.cc
index b2324b7..524946a 100644
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -1,2 +1,4 @@
 #include <cassert>
+#include <algorithm>
+
 #include <opkele/types.h>