diff --git a/src/misc/str.hpp b/src/misc/str.hpp
--- a/src/misc/str.hpp
+++ b/src/misc/str.hpp
@@ -14,6 +14,7 @@
 
 #include <errno.h>
 #include <stdarg.h>
+#include "blob.hpp"
 #include "../string_func.h"
 
 /** Blob based case sensitive ANSI/UTF-8 string */