diff --git a/R/heikinAshi.R b/R/heikinAshi.R
index 84e14d9..6e10c54 100644
--- a/R/heikinAshi.R
+++ b/R/heikinAshi.R
@@ -13,7 +13,7 @@
   heikinAshi$xH <- apply(tmp,1,max)
   heikinAshi$xL <- apply(tmp,1,min)
   heikinAshi$posNeg <- 1
-  heikinAshi$posNeg[heikinAshi$C < heikinAshi$O] <- -1
+  heikinAshi$posNeg[heikinAshi$xC < heikinAshi$xO] <- -1
   return(heikinAshi)
 }