diff --git a/unpacked/jax/output/CommonHTML/autoload/mtable.js b/unpacked/jax/output/CommonHTML/autoload/mtable.js
index c49e67cea..2e2b5bb36 100644
--- a/unpacked/jax/output/CommonHTML/autoload/mtable.js
+++ b/unpacked/jax/output/CommonHTML/autoload/mtable.js
@@ -197,7 +197,7 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
         //  Space and borders between rows
         //
         B = RSPACE[i]/2; border = null; L = "0";
-        if (RLINES[i] !== MML.LINES.NONE) {
+        if (RLINES[i] !== MML.LINES.NONE && RLINES[i] !== "") {
           border = state.t+" "+RLINES[i];
           B -= 1/CHTML.em/2;
         }
diff --git a/unpacked/jax/output/HTML-CSS/autoload/mtable.js b/unpacked/jax/output/HTML-CSS/autoload/mtable.js
index eccc7063b..81cb05212 100644
--- a/unpacked/jax/output/HTML-CSS/autoload/mtable.js
+++ b/unpacked/jax/output/HTML-CSS/autoload/mtable.js
@@ -401,11 +401,11 @@ MathJax.Hub.Register.StartupHook("HTML-CSS Jax Ready",function () {
       y = Y;
       for (i = 0, m = A.length-1; i < m; i++) {
         dy = Math.max(0,D[i]+H[i+1]+RSPACE[i]);
-        if (RLINES[i] !== "none") {
+        if (RLINES[i] !== MML.LINES.NONE && RLINES[i] !== "") {
           line = HTMLCSS.createRule(stack,1.25/HTMLCSS.em,0,fW); HTMLCSS.addBox(stack,line);
           line.bbox = {h:1.25/HTMLCSS.em, d:0, w:fW, rw:fW, lw:0};
           HTMLCSS.placeBox(line,0,y - D[i] - (dy-D[i]-H[i+1])/2,true);
-          if (RLINES[i] === "dashed") line.style.borderTopStyle = "dashed";
+          if (RLINES[i] === MML.LINES.DASHED) line.style.borderTopStyle = "dashed";
           if (hasRelativeWidth) line.style.width = "100%"
         }
         y -= dy;
diff --git a/unpacked/jax/output/SVG/autoload/mtable.js b/unpacked/jax/output/SVG/autoload/mtable.js
index ee3a18159..669f10792 100644
--- a/unpacked/jax/output/SVG/autoload/mtable.js
+++ b/unpacked/jax/output/SVG/autoload/mtable.js
@@ -308,7 +308,7 @@ MathJax.Hub.Register.StartupHook("SVG Jax Ready",function () {
       y = Y - lw/2;
       for (i = 0, m = A.length-1; i < m; i++) {
         dy = Math.max(0,D[i]+H[i+1]+RSPACE[i]);
-        if (RLINES[i] !== "none")
+        if (RLINES[i] !== MML.LINES.NONE && RLINES[i] !== "")
           {svg.Add(BBOX.HLINE(fW,lw,RLINES[i]),0,y-D[i]-(dy-D[i]-H[i+1])/2)}
         y -= dy;
       }