diff --git a/client/mifarehost.c b/client/mifarehost.c
index 31ed8e39d..60f3eaa01 100644
--- a/client/mifarehost.c
+++ b/client/mifarehost.c
@@ -956,8 +956,8 @@ int detect_classic_nackbug(bool verbose){
 							if (verbose) {
 								PrintAndLogEx(FAILED, "card random number generator seems to be based on the well-known generating polynomial");
 								PrintAndLogEx(NORMAL, "[- ]with 16 effective bits only, but shows unexpected behavior, try again."); 
-								return 0;
-							}
+x							}
+							return 2;
 						}				
 				case  2 : PrintAndLogEx(SUCCESS, "always leak NACK detected"); return 3;
 				case  1 : PrintAndLogEx(SUCCESS, "NACK bug detected"); return 1;