diff --git a/lib/main.js b/lib/main.js
index d78c717..5afe568 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -80,6 +80,15 @@ exports.mjpage = function(htmlstring, configOptions, typesetOptions, callback) {
     const window = doc.defaultView;
     const document = window.document;
 
+    //rewrite custom scripts types from core MathJax
+    const rewriteScripts = function(oldType, newType){
+        const scripts = document.querySelectorAll('script[type="' + oldType + '"]');
+        for (let script of scripts) script.setAttribute('type', newType);
+    }
+    rewriteScripts('math/tex','math/inline-TeX');
+    rewriteScripts('math/tex; mode=display','math/TeX');
+    rewriteScripts('math/asciimath','math/asciiMath');
+
     // configure mathjax-node
     mathjax.config(config);
 
@@ -114,8 +123,13 @@ exports.mjpage = function(htmlstring, configOptions, typesetOptions, callback) {
         window.ascii.PreProcess();
     }
 
+    const scripts = document.querySelectorAll(`
+        script[type="math/TeX"],
+        script[type="math/inline-TeX"],
+        script[type="math/AsciiMath"],
+        script[type="math/MathML"],
+        script[type="math/MathML-block"]`);
     // convert with mathjax-node
-    const scripts = document.querySelectorAll('script[type^="math/"]');
     const process = function(index) {
         const script = scripts[index];
         if (script) {
@@ -213,7 +227,7 @@ exports.mjpage = function(htmlstring, configOptions, typesetOptions, callback) {
                             border: 0;
                             margin: 0
                             }
-														
+
                             .mjpage__block {
                             text-align: center;
                             margin: 1em 0em;
diff --git a/test/script-types.js b/test/script-types.js
new file mode 100644
index 0000000..69ef151
--- /dev/null
+++ b/test/script-types.js
@@ -0,0 +1,51 @@
+const tape = require('tape');
+const mjpage = require('../lib/main.js').mjpage;
+const jsdom = require('jsdom').jsdom;
+
+tape('Custom script types are processed correctly', function(t) {
+    t.plan(4);
+    const inlineInput = '<script type="math/tex"> e^{i\\pi} = -1</script>';
+    mjpage(inlineInput, {
+        format: ['TeX']
+    }, {
+        svg: true
+    }, function(output) {
+			const window = jsdom(output).defaultView;
+			const expected = window.document.querySelector('.mjpage');
+      t.ok(expected, '"math/tex" treated as inline');
+    });
+
+    const displayInput = '<script type="math/tex; mode=display"> e^{i\\pi} = -1</script>';
+    mjpage(displayInput, {
+        format: ['TeX']
+    }, {
+        svg: true
+    }, function(output) {
+			const window = jsdom(output).defaultView;
+			const expected = window.document.querySelector('.mjpage__block');
+      t.ok(expected, '"math/tex; mode=display" treated as block');
+    });
+
+    const asciiInput = '<script type="math/asciimath">alpha</script>';
+    mjpage(displayInput, {
+        format: ['TeX']
+    }, {
+        svg: true
+    }, function(output) {
+			const window = jsdom(output).defaultView;
+			const expected = window.document.querySelector('.mjpage');
+      t.ok(expected, '"math/asciimath" treated as asciimath');
+    });
+
+    const crazyCaseInput = '<script type="math/blarg"> e^{i\\pi} = -1</script>';
+    mjpage(crazyCaseInput, {
+        format: ['TeX']
+    }, {
+        svg: true
+    }, function(output) {
+			const window = jsdom(output).defaultView;
+			const expected = window.document.querySelector('.mjpage');
+      t.notOk(expected, 'Other scripts are ignored');
+    });
+
+});