diff --git a/lib/carto/tree/filterset.js b/lib/carto/tree/filterset.js
index 563bf3d..2866959 100644
--- a/lib/carto/tree/filterset.js
+++ b/lib/carto/tree/filterset.js
@@ -92,6 +92,9 @@ tree.Filterset.prototype.toJS = function(env) {
       val = filter._val.toString(true);
     }
     var attrs = "data";
+    if (op === '=~') {
+      return "(" + attrs + "['" + filter.key.value  + "'] + '').match(" + (val.is === 'string' ? "'" + val.toString().replace(/'/g, "\\'") + "'" : val) + ")";
+    }
     return attrs + "['" + filter.key.value  + "'] " + op + " " + (val.is === 'string' ? "'" + val.toString().replace(/'/g, "\\'") + "'" : val);
   }).join(' && ');
 };
diff --git a/test/rendering_js.test.js b/test/rendering_js.test.js
index b716c63..e3e566d 100644
--- a/test/rendering_js.test.js
+++ b/test/rendering_js.test.js
@@ -4,19 +4,19 @@ var carto = require('../lib/carto');
 describe('RenderingJS', function() {
   var shader;
   var style = [
-  '#world {', 
-    'line-width: 2;', 
-    'line-color: #f00;', 
-    '[frame-offset = 1] {', 
-      'line-width: 3;', 
-    '}', 
-    '[frame-offset = 2] {', 
-      'line-width: 3;', 
-    '}', 
-  '}', 
-  '', 
-  '#worls[frame-offset = 10] {', 
-      'line-width: 4;', 
+  '#world {',
+    'line-width: 2;',
+    'line-color: #f00;',
+    '[frame-offset = 1] {',
+      'line-width: 3;',
+    '}',
+    '[frame-offset = 2] {',
+      'line-width: 3;',
+    '}',
+  '}',
+  '',
+  '#worls[frame-offset = 10] {',
+      'line-width: 4;',
   '}'
   ].join('\n');
 
@@ -195,4 +195,33 @@ describe('RenderingJS', function() {
     assert.equal(width, 8);
   });
 
+  it("should not throw `ReferenceError` with `=~` operator", function(){
+    var css = [
+      '#layer[name=~".*wadus*"] {',
+      '  marker-width: 14;',
+      '}'
+    ].join('\n');
+
+    assert.doesNotThrow(function () {
+      var shader = (new carto.RendererJS({})).render(css);
+      var layer = shader.getLayers()[0];
+      var value = layer.shader['marker-width'].style({ name: 'wadus' }, { zoom: 1 });
+      assert.equal(value, 14);
+    }, ReferenceError);
+  });
+
+  it("`=~` operator should support numbers", function(){
+    var css = [
+      '#layer[value=~"^10"] {',
+      '  marker-width: 14;',
+      '}'
+    ].join('\n');
+
+    assert.doesNotThrow(function () {
+      var shader = (new carto.RendererJS({})).render(css);
+      var layer = shader.getLayers()[0];
+      var value = layer.shader['marker-width'].style({ value: 10 }, { zoom: 1 });
+      assert.equal(value, 14);
+    }, Error);
+  });
 });