diff --git a/tools/blob_handler.hpp b/tools/blob_handler.hpp
index 73f0d94..c22d326 100644
--- a/tools/blob_handler.hpp
+++ b/tools/blob_handler.hpp
@@ -3,6 +3,9 @@
 #include "blob_interface.hpp"
 #include "ipmi_interface.hpp"
 
+namespace host_tool
+{
+
 class BlobHandler : public BlobInterface
 {
   public:
@@ -68,3 +71,5 @@
   private:
     IpmiInterface* ipmi;
 };
+
+} // namespace host_tool