diff --git a/DESCRIPTION b/DESCRIPTION
index 4afcd61a..d407aec7 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: blavaan
 Title: Bayesian Latent Variable Analysis
-Version: 0.5-5.1300
+Version: 0.5-5.1302
 Authors@R: c(person(given = "Edgar", family = "Merkle",
                     role = c("aut", "cre"),
                     email = "merklee@missouri.edu",
diff --git a/R/lav_export_stanmarg.R b/R/lav_export_stanmarg.R
index 3670c84e..63c2a523 100644
--- a/R/lav_export_stanmarg.R
+++ b/R/lav_export_stanmarg.R
@@ -1386,7 +1386,7 @@ lav2standata <- function(lavobject, dosam = FALSE) {
     dat$YX <- dat$YX[, -ordidx, drop=FALSE]
 
 
-    nlevs <- 1 + as.numeric( table(pta$th.idx[[1]]) )
+    nlevs <- 1 + as.numeric( table(pta$th.idx[[1]][pta$th.idx[[1]] != 0L]) )
     maxcat <- max(nlevs)
 
     dat$Nord <- length(ordidx)