diff --git a/src/server/scripts/Commands/cs_npc.cpp b/src/server/scripts/Commands/cs_npc.cpp
--- a/src/server/scripts/Commands/cs_npc.cpp
+++ b/src/server/scripts/Commands/cs_npc.cpp
@@ -118,7 +118,10 @@
             if (team) { teamval = atoi(team); }
             if (teamval < 0) { teamval = 0; }

-            uint32 id  = atoi(charID);
+            uint32 id = 0;
+
+            if(!sscanf(charID, "%d", &id))
+                return false;

             Player *chr = handler->GetSession()->GetPlayer();
             float x = chr->GetPositionX();