diff --git a/ntop.c b/ntop.c
index 6a95358..c1cafc3 100644
--- a/ntop.c
+++ b/ntop.c
@@ -1700,7 +1700,7 @@ int _tmain(int argc, TCHAR *argv[])
             TCHAR *Context;
             TCHAR *Token = _tcstok_s(argv[i], Delim, &Context);
             while(Token && NameFilterCount < MAX_NAMEPARTS) {
-              strcpy_s(NameFilterList[NameFilterCount++], sizeof(Token) < MAX_NAMEPARTSIZE ? sizeof(Token) : MAX_NAMEPARTSIZE, Token);
+              _tcsncpy_s(NameFilterList[NameFilterCount++], MAX_NAMEPARTSIZE+1, Token, MAX_NAMEPARTSIZE);
               Token = _tcstok_s(0, Delim, &Context);
             }