diff --git a/balance.cc b/balance.cc
index 42ed2788..e829d268 100644
--- a/balance.cc
+++ b/balance.cc
@@ -1,6 +1,7 @@
 #include "balance.h"
 
 #include <deque>
+#include <algorithm>
 
 namespace ledger {
 
diff --git a/walk.cc b/walk.cc
index c4b3653b..bf1e9186 100644
--- a/walk.cc
+++ b/walk.cc
@@ -3,6 +3,8 @@
 #include "textual.h"
 #include "util.h"
 
+#include <algorithm>
+
 namespace ledger {
 
 std::list<transaction_xdata_t> transactions_xdata;