diff --git a/src/komodo.h b/src/komodo.h
index 2eaea6e9d..caca62784 100644
--- a/src/komodo.h
+++ b/src/komodo.h
@@ -525,7 +525,7 @@ int32_t komodo_heightnotary(int32_t height,uint8_t *pubkey33)
 int32_t komodo_block2height(CBlock *block)
 {
     int32_t i,height = 0; uint8_t *ptr = (uint8_t *)block->vtx[0].vin[0].scriptSig.data();
-    if ( block->vin[0].scriptSig.size() > 5 )
+    if ( block->vtx[0].vin[0].scriptSig.size() > 5 )
     {
         for (i=0; i<6; i++)
             printf("%02x",ptr[i]);