diff --git a/resources/mode/mediawiki/mediawiki.js b/resources/mode/mediawiki/mediawiki.js
index 5f4d6add..37ef1e70 100644
--- a/resources/mode/mediawiki/mediawiki.js
+++ b/resources/mode/mediawiki/mediawiki.js
@@ -751,7 +751,7 @@
 							state.stack.push( state.tokenize );
 							state.tokenize = inVariable;
 							return makeLocalStyle( 'mw-templatevariable-bracket', state );
-						} else if ( stream.match( /^\{[\s\u00a0]*/ ) ) {
+						} else if ( stream.match( /^{(?!{(?!{))[\s\u00a0]*/ ) ) {
 							if ( stream.peek() === '#' ) { // Parser function
 								state.nExt++;
 								state.stack.push( state.tokenize );
diff --git a/resources/mode/mediawiki/tests/qunit/CodeMirror.mediawiki.test.js b/resources/mode/mediawiki/tests/qunit/CodeMirror.mediawiki.test.js
index 0964cc93..ecf079d2 100644
--- a/resources/mode/mediawiki/tests/qunit/CodeMirror.mediawiki.test.js
+++ b/resources/mode/mediawiki/tests/qunit/CodeMirror.mediawiki.test.js
@@ -83,7 +83,7 @@
 			{
 				title: 'T292967: table syntax where all | are escaped with the {{!}} parser function',
 				input: '{{{!}}\n{{!}}-\n{{!}}}',
-				output: '<pre><span><span class="cm-mw-template-ground cm-mw-template-bracket">{{</span><span class="cm-mw-template-ground cm-mw-template-name cm-mw-pagename">{!</span><span class="cm-mw-template-ground cm-mw-template-bracket">}}</span></span></pre><pre><span><span class="cm-mw-ext-ground cm-mw-parserfunction-bracket">{{</span><span class="cm-mw-ext-ground cm-mw-parserfunction-name">!</span><span class="cm-mw-ext-ground cm-mw-parserfunction-bracket">}}</span>-</span></pre><pre><span><span class="cm-mw-ext-ground cm-mw-parserfunction-bracket">{{</span><span class="cm-mw-ext-ground cm-mw-parserfunction-name">!</span><span class="cm-mw-ext-ground cm-mw-parserfunction-bracket">}}</span>}</span></pre>'
+				output: '<pre><span>{<span class="cm-mw-ext-ground cm-mw-parserfunction-bracket">{{</span><span class="cm-mw-ext-ground cm-mw-parserfunction-name">!</span><span class="cm-mw-ext-ground cm-mw-parserfunction-bracket">}}</span></span></pre><pre><span><span class="cm-mw-ext-ground cm-mw-parserfunction-bracket">{{</span><span class="cm-mw-ext-ground cm-mw-parserfunction-name">!</span><span class="cm-mw-ext-ground cm-mw-parserfunction-bracket">}}</span>-</span></pre><pre><span><span class="cm-mw-ext-ground cm-mw-parserfunction-bracket">{{</span><span class="cm-mw-ext-ground cm-mw-parserfunction-name">!</span><span class="cm-mw-ext-ground cm-mw-parserfunction-bracket">}}</span>}</span></pre>'
 			},
 			{
 				title: 'section headings',