diff --git a/src/cc/CCassetsCore.cpp b/src/cc/CCassetsCore.cpp
index 466db2d1b..a46e130f9 100644
--- a/src/cc/CCassetsCore.cpp
+++ b/src/cc/CCassetsCore.cpp
@@ -261,6 +261,8 @@ uint64_t AssetValidateCCvin(struct CCcontract_info *cp,Eval* eval,char *CCaddr,c
     else if ( GetAssetorigaddrs(cp,CCaddr,origaddr,vinTx) == 0 )
         return eval->Invalid("couldnt get origaddr for buyvin");
     fprintf(stderr,"Got %.8f to origaddr.(%s)\n",(double)vinTx.vout[tx.vin[vini].prevout.n].nValue/COIN,origaddr);
+    if ( vinTx.vout[0].nValue == 0 )
+        return eval->Invalid("null value CCvin");
     return(vinTx.vout[0].nValue);
 }