diff --git a/tools/hdi-gen/util/file.cpp b/tools/hdi-gen/util/file.cpp
index faaa51d9..da620328 100755
--- a/tools/hdi-gen/util/file.cpp
+++ b/tools/hdi-gen/util/file.cpp
@@ -9,6 +9,7 @@
 #include "util/file.h"
 #include <cstdlib>
 #include <cstring>
+#include <string>
 #include <functional>
 #include <sys/stat.h>
 #include <unistd.h>