diff --git a/lib/marked.js b/lib/marked.js
index ba460fb2..01bd9abe 100644
--- a/lib/marked.js
+++ b/lib/marked.js
@@ -91,7 +91,7 @@ block.normal = merge({}, block);
  */
 
 block.gfm = merge({}, block.normal, {
-  fences: /^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n(?:|([\s\S]*?)\n) *\1 *(?:\n+|$)/,
+  fences: /^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n(?:|([\s\S]*?)\n) *\1[~`]* *(?:\n+|$)/,
   paragraph: /^/,
   heading: /^ *(#{1,6}) +([^\n]+?) *#* *(?:\n+|$)/
 });
diff --git a/test/specs/commonmark/commonmark-spec.js b/test/specs/commonmark/commonmark-spec.js
index 7cca2d83..5f8faa94 100644
--- a/test/specs/commonmark/commonmark-spec.js
+++ b/test/specs/commonmark/commonmark-spec.js
@@ -160,7 +160,7 @@ describe('CommonMark 0.28 Fenced code blocks', function() {
   var section = 'Fenced code blocks';
 
   // var shouldPassButFails = [];
-  var shouldPassButFails = [93, 95, 96, 97, 106, 108, 112];
+  var shouldPassButFails = [95, 96, 97, 106, 108, 112];
 
   var willNotBeAttemptedByCoreTeam = [];