diff --git a/src/image.cpp b/src/image.cpp
index bff1217..bf11db9 100644
--- a/src/image.cpp
+++ b/src/image.cpp
@@ -96,7 +96,7 @@ Image image::identicon(const string &digest)
 
     try
     {
-        std::uint64_t random = 0xffff;
+        std::uint64_t random = 0xffffffffffffffff;
         for (uint64_t chunk = 0; chunk < 4; ++chunk)
         {
             std::stringstream ss;