diff --git a/src/memoryprofiler.js b/src/memoryprofiler.js
index 8b3a4e60650a8..e55940b96ccb0 100644
--- a/src/memoryprofiler.js
+++ b/src/memoryprofiler.js
@@ -272,6 +272,7 @@ var emscriptenMemoryProfiler = {
     var div;
     if (!emscriptenMemoryProfiler.memoryprofiler_summary) {
       div = document.createElement("div");
+      div.className = 'emscripten-memory-profiler-container';
       div.innerHTML = "<div style='border: 2px solid black; padding: 2px;'><canvas style='border: 1px solid black; margin-left: auto; margin-right: auto; display: block;' id='memoryprofiler_canvas' width='100%' height='50'></canvas><input type='checkbox' id='showHeapResizes' onclick='emscriptenMemoryProfiler.updateUi()'>Display heap and sbrk() resizes. Filter sbrk() and heap resize callstacks by keywords: <input type='text' id='sbrkFilter'>(reopen page with ?sbrkFilter=foo,bar query params to prepopulate this list)<br/>Track all allocation sites larger than <input id='memoryprofiler_min_tracked_alloc_size' type=number value="+emscriptenMemoryProfiler.trackedCallstackMinSizeBytes+"></input> bytes, and all allocation sites with more than <input id='memoryprofiler_min_tracked_alloc_count' type=number value="+emscriptenMemoryProfiler.trackedCallstackMinAllocCount+"></input> outstanding allocations. (visit this page via URL query params foo.html?trackbytes=1000&trackcount=100 to apply custom thresholds starting from page load)<br/><div id='memoryprofiler_summary'></div><input id='memoryprofiler_clear_alloc_stats' type='button' value='Clear alloc stats' ></input><br />Sort allocations by:<select id='memoryProfilerSort'><option value='bytes'>Bytes</option><option value='count'>Count</option><option value='fixed'>Fixed</option></select><div id='memoryprofiler_ptrs'></div>";
     }
     var populateHtmlBody = function() {