diff --git a/NmapOps.cc b/NmapOps.cc
index b3f4e9d31..9fb00185d 100644
--- a/NmapOps.cc
+++ b/NmapOps.cc
@@ -258,7 +258,7 @@ void NmapOps::Initialize() {
   pingtype = PINGTYPE_UNKNOWN;
   listscan = allowall = ackscan = bouncescan = connectscan = 0;
   rpcscan = nullscan = xmasscan = fragscan = synscan = windowscan = 0;
-  maimonscan = idlescan = finscan = udpscan = ipprotscan;
+  maimonscan = idlescan = finscan = udpscan = ipprotscan = 0;
   noportscan = noresolve = 0;
   sctpinitscan = 0;
   sctpcookieechoscan = 0;