diff --git a/psw/enclave_common/sgx_enclave_common.cpp b/psw/enclave_common/sgx_enclave_common.cpp
index b13d912e0..498cf6d69 100644
--- a/psw/enclave_common/sgx_enclave_common.cpp
+++ b/psw/enclave_common/sgx_enclave_common.cpp
@@ -34,6 +34,7 @@
 #include <sys/types.h>
 #include <dlfcn.h>
 #include <map>
+#include <algorithm>
 #include <functional>
 #include "sgx_enclave_common.h"
 #include "sgx_urts.h"