Merge "recovery: Add the missing #include."
diff --git a/common.h b/common.h
index 3e5f547..bda7935 100644
--- a/common.h
+++ b/common.h
@@ -20,6 +20,8 @@
 #include <stdio.h>
 #include <stdarg.h>
 
+#include <string>
+
 #define STRINGIFY(x) #x
 #define EXPAND(x) STRINGIFY(x)