diff --git a/unpacked/extensions/TeX/AMSmath.js b/unpacked/extensions/TeX/AMSmath.js
index 083c9166b..4b241ec5f 100644
--- a/unpacked/extensions/TeX/AMSmath.js
+++ b/unpacked/extensions/TeX/AMSmath.js
@@ -140,8 +140,8 @@ MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
       'equation':    ['EquationBegin','Equation',true],
       'equation*':   ['EquationBegin','EquationStar',false],
 
-      eqnarray:      ['AMSarray',null,true,true, 'rcl',COLS([0]),".5em"],
-      'eqnarray*':   ['AMSarray',null,false,true,'rcl',COLS([0]),".5em"]
+      eqnarray:      ['AMSarray',null,true,true, 'rcl',"0 "+MML.LENGTH.THICKMATHSPACE,".5em"],
+      'eqnarray*':   ['AMSarray',null,false,true,'rcl',"0 "+MML.LENGTH.THICKMATHSPACE,".5em"]
     },
     
     delimiter: {