diff --git a/scan_engine.cc b/scan_engine.cc
index afb68fcce..1743804cd 100644
--- a/scan_engine.cc
+++ b/scan_engine.cc
@@ -202,7 +202,7 @@ class UltraProbe {
 public:
   UltraProbe();
   ~UltraProbe();
-  enum UPType { UP_UNSET, UP_IP, UP_CONNECT, UP_RPC, UP_ARP, UP_ND } type; /* The type of probe this is */
+  enum UPType { UP_UNSET, UP_IP, UP_CONNECT, UP_ARP, UP_ND } type; /* The type of probe this is */
 
   /* Sets this UltraProbe as type UP_IP and creates & initializes the
      internal IPProbe.  The relevent probespec is necessary for setIP