diff --git a/src/command.cpp b/src/command.cpp
index 70f0f422a..ae21ba633 100644
--- a/src/command.cpp
+++ b/src/command.cpp
@@ -29,6 +29,7 @@
 #include <iomanip>
 #include <sstream>
 #include <fstream>
+#include <algorithm>
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>