diff --git a/src/support/convert.cpp b/src/support/convert.cpp
index 125d40492c..a9e3e7e5cb 100644
--- a/src/support/convert.cpp
+++ b/src/support/convert.cpp
@@ -17,6 +17,7 @@
 #include <boost/lexical_cast.hpp>
 
 #include <string>
+#include <cstdlib>
 
 using namespace std;
 
diff --git a/src/support/socktools.cpp b/src/support/socktools.cpp
index 25e9716e49..3b9574871f 100644
--- a/src/support/socktools.cpp
+++ b/src/support/socktools.cpp
@@ -48,6 +48,7 @@ int accept(int)
 
 #include <cerrno>
 #include <string>
+#include <cstring>
 
 using namespace std;