diff --git a/cvd_src/Linux/v4lcontrol.cc b/cvd_src/Linux/v4lcontrol.cc
index 191cf31b..ce82c313 100644
--- a/cvd_src/Linux/v4lcontrol.cc
+++ b/cvd_src/Linux/v4lcontrol.cc
@@ -8,6 +8,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <string.h>
 
 using namespace std;