diff --git a/app/assets/javascripts/editor/evaluation.js.erb b/app/assets/javascripts/editor/evaluation.js.erb
index 2267f460..19f57ce3 100644
--- a/app/assets/javascripts/editor/evaluation.js.erb
+++ b/app/assets/javascripts/editor/evaluation.js.erb
@@ -157,15 +157,18 @@ CodeOceanEditorEvaluation = {
       }
 
       if (output.stderr != undefined && output.stderr != '') {
-        element.text('StdErr: ' + element.text() + output.stderr);
+          element.append('StdErr: ' + output.stderr);
+        //element.text('StdErr: ' + element.text() + output.stderr);
       }
 
     } else if (output.stderr) {
-      element.addClass('text-warning').text(element.text() + output.stderr);
+        element.addClass('text-warning').append(output.stderr);
+        //element.addClass('text-warning').text(element.text() + output.stderr);
       this.flowrOutputBuffer += output.stderr;
       this.QaApiOutputBuffer.stderr += output.stderr;
     } else if (output.stdout) {
-      element.addClass('text-success').text(element.text() + output.stdout);
+        element.addClass('text-success').append(output.stdout);
+        //element.addClass('text-success').text(element.text() + output.stdout);
       this.flowrOutputBuffer += output.stdout;
       this.QaApiOutputBuffer.stdout += output.stdout;
     } else {