diff --git a/src/komodo_pax.h b/src/komodo_pax.h
index 3a11a7407..b6088a80a 100644
--- a/src/komodo_pax.h
+++ b/src/komodo_pax.h
@@ -91,6 +91,8 @@ int32_t dpow_readprices(uint8_t *data,uint32_t *timestampp,double *KMDBTCp,doubl
     {
         if ( pvals[i] != 0 )
             nonz++;
+        else if ( nonz != 0 )
+            printf("pvals[%d] is zero\n",i);
         len += iguana_rwnum(0,&data[len],sizeof(uint32_t),(void *)&pvals[i]);
         //printf("%u ",pvals[i]);
     }